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February Weather in Greenwich Connecticut, United States

Daily high temperatures increase by 6°F, from 38°F to 44°F, rarely falling below 25°F or exceeding 56°F.

Daily low temperatures increase by 5°F, from 24°F to 30°F, rarely falling below 11°F or exceeding 41°F.

For reference, on July 20, the hottest day of the year, temperatures in Greenwich typically range from 68°F to 84°F, while on January 29, the coldest day of the year, they range from 24°F to 37°F.

Average High and Low Temperature in February in Greenwich

Average High and Low Temperature in February in GreenwichFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292910°F10°F15°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FJanMarFeb 138°FFeb 138°F24°F24°FFeb 2944°FFeb 2944°F30°F30°FFeb 1140°FFeb 1140°F26°F26°FFeb 2141°FFeb 2141°F27°F27°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in February in Greenwich

Average Hourly Temperature in February in GreenwichFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJanMarfreezingfreezingvery coldcold
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Constanţa, Romania (4,840 miles away); Karabudakhkent, Russia (5,596 miles); and Nagano, Japan (6,712 miles) are the far-away foreign places with temperatures most similar to Greenwich (view comparison).

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The month of February in Greenwich experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 52% throughout the month. The highest chance of overcast or mostly cloudy conditions is 53% on February 28.

The clearest day of the month is February 3, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on February 28, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 53%, while on September 22, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

Cloud Cover Categories in February in Greenwich

Cloud Cover Categories in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanMarSep 2264%Sep 2264%Feb 149%Feb 149%Feb 2947%Feb 2947%Feb 1148%Feb 1148%Feb 2148%Feb 2148%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Greenwich, the chance of a wet day over the course of February is gradually increasing, starting the month at 23% and ending it at 26%.

For reference, the year's highest daily chance of a wet day is 36% on August 2, and its lowest chance is 22% on January 29.

Over the course of February in Greenwich, the chance of a day with only rain increases from 12% to 18%, the chance of a day with mixed snow and rain remains an essentially constant 5% throughout, and the chance of a day with only snow remains an essentially constant 4% throughout.

Probability of Precipitation in February in Greenwich

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during February in Greenwich is gradually increasing, starting the month at 2.0 inches, when it rarely exceeds 3.9 inches or falls below 0.6 inches, and ending the month at 2.5 inches, when it rarely exceeds 4.9 inches or falls below 0.9 inches.

The lowest average 31-day accumulation is 2.0 inches on February 6.

Average Monthly Rainfall in February in Greenwich

Average Monthly Rainfall in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in8 in8 inJanMarFeb 62.0 inFeb 62.0 inFeb 292.5 inFeb 292.5 inFeb 212.3 inFeb 212.3 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during February in Greenwich is decreasing, starting the month at 7.5 inches, when it rarely exceeds 19.2 inches or falls below 0.3 inches, and ending the month at 5.9 inches, when it rarely exceeds 17.3 inches.

Average Monthly Snowfall in February in Greenwich

The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Over the course of February in Greenwich, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 10 minutes, implying an average daily increase of 2 minutes, 30 seconds, and weekly increase of 17 minutes, 33 seconds.

The shortest day of the month is February 1, with 10 hours, 5 minutes of daylight and the longest day is February 29, with 11 hours, 16 minutes of daylight.

Hours of Daylight and Twilight in February in Greenwich

Hours of Daylight and Twilight in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrJanMarnightnightdaydayFeb 110 hr, 5 minFeb 110 hr, 5 minFeb 2911 hr, 16 minFeb 2911 hr, 16 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Greenwich is 7:05 AM on February 1 and the earliest sunrise is 36 minutes earlier at 6:29 AM on February 29.

The earliest sunset is 5:10 PM on February 1 and the latest sunset is 34 minutes later at 5:44 PM on February 29.

Daylight saving time is observed in Greenwich during 2024, but it neither starts nor ends during February, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 5:22 AM and sets 15 hours, 8 minutes later, at 8:30 PM, while on December 21, the shortest day of the year, it rises at 7:16 AM and sets 9 hours, 13 minutes later, at 4:29 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in February in Greenwich

Sunrise & Sunset with Twilight and Daylight Saving Time in February in GreenwichFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanMar6:29 AM6:29 AMFeb 295:44 PMFeb 295:44 PM7:05 AM7:05 AMFeb 15:10 PMFeb 15:10 PM6:54 AM6:54 AMFeb 115:23 PMFeb 115:23 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of February. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in February in Greenwich

Solar Elevation and Azimuth in February in GreenwichFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMJanMar0010102020203030405000010102020303040
northeastsouthwest
Solar elevation and azimuth over the course of February 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for February 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in February in Greenwich

Moon Rise, Set & Phases in February in GreenwichFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJanMarJan 116:58 AMJan 116:58 AMJan 2512:55 PMJan 2512:55 PMFeb 96:00 PMFeb 96:00 PMFeb 247:31 AMFeb 247:31 AMMar 105:01 AMMar 105:01 AMMar 253:01 AMMar 253:01 AM7:51 AM7:51 AM4:51 PM4:51 PM4:52 PM4:52 PM8:04 AM8:04 AM7:07 AM7:07 AM5:03 PM5:03 PM4:51 PM4:51 PM6:57 AM6:57 AM7:31 AM7:31 AM7:33 PM7:33 PM6:46 PM6:46 PM7:00 AM7:00 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Feb 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
65%-10:09 AMWSW-4:36 AMS249,131 mi
2
50%12:04 AMESE10:31 AMWSW-5:18 AMS246,668 mi
3
45%1:09 AMESE10:58 AMWSW-6:04 AMS243,521 mi
4
35%2:18 AMESE11:32 AMSW-6:55 AMS239,828 mi
5
25%3:27 AMSE12:16 PMSW-7:52 AMS235,809 mi
6
15%4:35 AMSE1:13 PMSW-8:54 AMS231,769 mi
7
8%5:35 AMSE2:22 PMSW-9:58 AMS228,078 mi
8
2%6:26 AMSE3:40 PMWSW-11:03 AMS225,113 mi
9
0%7:07 AMESE5:03 PMWSW-12:04 PMS223,192 mi
10
1%7:40 AMESE6:25 PMWSW-1:02 PMS222,505 mi
11
5%8:08 AMESE7:44 PMW-1:55 PMS223,085 mi
12
12%8:33 AME9:01 PMW-2:45 PMS224,808 mi
13
21%8:57 AME10:17 PMWNW-3:34 PMS227,434 mi
14
31%9:22 AMENE11:32 PMWNW-4:23 PMS230,657 mi
15
43%9:49 AMENE--5:13 PMS234,163 mi
16
50%-12:46 AMWNW10:21 AMENE6:05 PMS237,675 mi
17
64%-1:58 AMNW11:00 AMNE6:59 PMS240,977 mi
18
74%-3:05 AMNW11:45 AMNE7:54 PMS243,924 mi
19
83%-4:04 AMNW12:39 PMNE8:48 PMS246,440 mi
20
90%-4:54 AMNW1:39 PMNE9:41 PMS248,499 mi
21
95%-5:35 AMNW2:43 PMENE10:30 PMS250,109 mi
22
98%-6:08 AMWNW3:47 PMENE11:15 PMS251,292 mi
23
100%-6:34 AMWNW4:51 PMENE11:58 PMS252,068 mi
24
100%-6:57 AMWNW5:53 PMENE--
25
100%-7:17 AMW6:53 PME12:38 AMS252,439 mi
26
97%-7:36 AMW7:53 PME1:17 AMS252,384 mi
27
93%-7:54 AMW8:53 PME1:55 AMS251,865 mi
28
88%-8:13 AMWSW9:55 PMESE2:34 AMS250,829 mi
29
81%-8:34 AMWSW10:58 PMESE3:15 AMS249,225 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Greenwich is essentially constant during February, remaining around 0% throughout.

For reference, on August 1, the muggiest day of the year, there are muggy conditions 50% of the time, while on November 20, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in February in Greenwich

Humidity Comfort Levels in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JanMarFeb 150%Feb 150%Feb 10%Feb 10%Feb 290%Feb 290%drydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Greenwich is essentially constant during February, remaining within 0.1 miles per hour of 9.3 miles per hour throughout.

For reference, on February 26, the windiest day of the year, the daily average wind speed is 9.4 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 5.6 miles per hour.

The highest daily average wind speed during February is 9.4 miles per hour on February 26.

Average Wind Speed in February in Greenwich

Average Wind Speed in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphJanMarFeb 269.4 mphFeb 269.4 mphFeb 19.2 mphFeb 19.2 mphFeb 119.2 mphFeb 119.2 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Greenwich throughout February is predominantly from the west, with a peak proportion of 44% on February 1.

Wind Direction in February in Greenwich

Wind Direction in February in GreenwichWNFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%100%20%80%40%60%60%40%80%20%100%0%JanMarwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Greenwich is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Greenwich is essentially constant during February, remaining within 1°F of 38°F throughout.

The lowest average surface water temperature during February is 37°F on February 22.

Average Water Temperature in February in Greenwich

Average Water Temperature in February in GreenwichFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292934°F34°F36°F36°F38°F38°F40°F40°F42°F42°F44°F44°F46°F46°F48°F48°FJanMarFeb 2237°FFeb 2237°FFeb 139°FFeb 139°FFeb 1138°FFeb 1138°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Greenwich typically lasts for 7.2 months (220 days), from around April 2 to around November 8, rarely starting before March 16 or after April 20, and rarely ending before October 25 or after November 23.

The month of February in Greenwich is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in February in Greenwich

Time Spent in Various Temperature Bands and the Growing Season in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanMar0%Feb 150%Feb 15Mar 1610%Mar 1610%freezingvery coldcoldcoolfrigid
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Greenwich are essentially constant during February, remaining within 3°F of 8°F throughout.

Growing Degree Days in February in Greenwich

The average growing degree days accumulated over the course of February, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Greenwich is gradually increasing during February, rising by 0.9 kWh, from 2.5 kWh to 3.4 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in February in Greenwich

Average Daily Incident Shortwave Solar Energy in February in GreenwichFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhJanMarFeb 12.5 kWhFeb 12.5 kWhFeb 293.4 kWhFeb 293.4 kWhFeb 112.8 kWhFeb 112.8 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Greenwich are 41.026 deg latitude, -73.628 deg longitude, and 92 ft elevation.

The topography within 2 miles of Greenwich contains only modest variations in elevation, with a maximum elevation change of 243 feet and an average elevation above sea level of 77 feet. Within 10 miles contains only modest variations in elevation (715 feet). Within 50 miles contains significant variations in elevation (1,657 feet).

The area within 2 miles of Greenwich is covered by artificial surfaces (59%), water (20%), and trees (18%), within 10 miles by water (37%) and trees (32%), and within 50 miles by trees (36%) and water (31%).

This report illustrates the typical weather in Greenwich, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Greenwich.

For each station, the records are corrected for the elevation difference between that station and Greenwich according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Greenwich is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Greenwich and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Greenwich and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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