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February Weather in Deltana Alaska, United States

Daily high temperatures increase by 8°F, from 11°F to 19°F, rarely falling below -14°F or exceeding 36°F.

Daily low temperatures increase by 4°F, from -3°F to 1°F, rarely falling below -30°F or exceeding 23°F.

For reference, on July 6, the hottest day of the year, temperatures in Deltana typically range from 52°F to 68°F, while on January 16, the coldest day of the year, they range from -6°F to 8°F.

Average High and Low Temperature in February in Deltana

Average High and Low Temperature in February in DeltanaFeb11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929-30°F-30°F-20°F-20°F-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°FJanMarFeb 111°FFeb 111°F-3°F-3°FFeb 2919°FFeb 2919°F1°F1°FFeb 1113°FFeb 1113°F-2°F-2°FFeb 2117°FFeb 2117°F0°F0°FNowNow
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 Deltana

Average Hourly Temperature in February in DeltanaFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 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 AMJanMarNowNowfrigidfreezing
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.

Pyt-Yakh, Russia (3,605 miles away); Sorsk, Russia (3,775 miles); and Vidim, Russia (3,380 miles) are the far-away foreign places with temperatures most similar to Deltana (view comparison).

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The month of February in Deltana experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 58% to 54%.

The clearest day of the month is February 29, with clear, mostly clear, or partly cloudy conditions 46% of the time.

For reference, on September 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 66%, while on March 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 47%.

Cloud Cover Categories in February in Deltana

Cloud Cover Categories in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanMarFeb 142%Feb 142%Feb 2946%Feb 2946%Feb 1142%Feb 1142%Feb 2144%Feb 2144%NowNowclearmostly 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 Deltana, the chance of a wet day over the course of February is gradually decreasing, starting the month at 9% and ending it at 6%.

For reference, the year's highest daily chance of a wet day is 45% on July 2, and its lowest chance is 5% on March 17.

Probability of Precipitation in February in Deltana

Probability of Precipitation in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%0%1%1%2%2%3%3%4%4%5%5%6%6%7%7%8%8%9%9%10%10%11%11%12%12%JanMarFeb 19%Feb 19%Feb 296%Feb 296%Feb 118%Feb 118%Feb 218%Feb 218%NowNowsnowrainmixed
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).

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 Deltana is gradually decreasing, starting the month at 3.0 inches, when it rarely exceeds 6.8 inches or falls below 0.2 inches, and ending the month at 2.2 inches, when it rarely exceeds 6.0 inches.

Average Monthly Snowfall in February in Deltana

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 Deltana, the length of the day is very rapidly increasing. From the start to the end of the month, the length of the day increases by 3 hours, 0 minutes, implying an average daily increase of 6 minutes, 27 seconds, and weekly increase of 45 minutes, 6 seconds.

The shortest day of the month is February 1, with 7 hours, 10 minutes of daylight and the longest day is February 29, with 10 hours, 11 minutes of daylight.

Hours of Daylight and Twilight in February in Deltana

Hours of Daylight and Twilight in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrJanMarnightnightdaydayFeb 17 hr, 10 minFeb 17 hr, 10 minFeb 2910 hr, 11 minFeb 2910 hr, 11 minNowNow
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 Deltana is 9:19 AM on February 1 and the earliest sunrise is 1 hour, 31 minutes earlier at 7:48 AM on February 29.

The earliest sunset is 4:30 PM on February 1 and the latest sunset is 1 hour, 29 minutes later at 5:59 PM on February 29.

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

For reference, on June 20, the longest day of the year, the Sun rises at 3:14 AM and sets 20 hours, 55 minutes later, at 12:10 AM, while on December 21, the shortest day of the year, it rises at 10:31 AM and sets 4 hours, 16 minutes later, at 2:47 PM.

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

Sunrise & Sunset with Twilight and Daylight Saving Time in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829292 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJanMar7:48 AM7:48 AMFeb 295:59 PMFeb 295:59 PM9:19 AM9:19 AMFeb 14:30 PMFeb 14:30 PM8:48 AM8:48 AMFeb 115:02 PMFeb 115:02 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Deltana

Solar Elevation and Azimuth in February in DeltanaFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 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 AMJanMar00102000010NowNow
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 Deltana

Moon Rise, Set & Phases in February in DeltanaFeb1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292912 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJanMarJan 112:58 AMJan 112:58 AMJan 258:55 AMJan 258:55 AMFeb 92:00 PMFeb 92:00 PMFeb 243:31 AMFeb 243:31 AMMar 1012:01 AMMar 1012:01 AMMar 2411:01 PMMar 2411:01 PM12:35 PM12:35 PM9:56 AM9:56 AM4:19 PM4:19 PM4:28 PM4:28 PM8:46 AM8:46 AM7:50 AM7:50 AM5:35 PM5:35 PM7:46 PM7:46 PM7:35 AM7:35 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
63%12:51 AMESE9:58 AMWSW-5:26 AMS248,706 mi
2
50%2:29 AMSE9:47 AMSW-6:09 AMS246,101 mi
3
43%4:19 AMSE9:34 AMSSW-6:57 AMS242,833 mi
4
33%6:33 AMSSE9:06 AMSSW-7:50 AMS239,053 mi
5
23%8:49 AMS235,000 mi
6
14%9:53 AMS230,995 mi
7
6%10:59 AMS227,415 mi
8
2%10:19 AMSSE1:52 PMSSW-12:05 PMS224,635 mi
9
0%9:56 AMSE4:19 PMSW-1:07 PMS222,950 mi
10
2%9:43 AMESE6:28 PMWSW-2:04 PMS222,522 mi
11
6%9:33 AMESE8:28 PMW-2:57 PMS223,348 mi
12
13%9:24 AME10:22 PMW-3:46 PMS225,277 mi
13
23%9:14 AMENE--4:35 PMS228,049 mi
14
34%-12:16 AMWNW9:04 AMENE5:23 PMS231,352 mi
15
45%-2:14 AMNW8:52 AMNE6:13 PMS234,878 mi
16
50%-4:21 AMNNW8:34 AMNNE7:05 PMS238,360 mi
17
67%7:58 PMS241,597 mi
18
76%8:52 PMS244,461 mi
19
84%9:44 PMS246,884 mi
20
91%10:35 PMS248,851 mi
21
96%-9:31 AMNNW12:45 PMNNE11:22 PMS250,375 mi
22
98%-9:09 AMNW2:44 PMNE--
23
99%-8:56 AMNW4:28 PMNE12:07 AMS251,477 mi
24
100%-8:46 AMWNW6:03 PMENE12:48 AMS252,173 mi
25
99%-8:37 AMWNW7:33 PME1:28 AMS252,462 mi
26
97%-8:29 AMW9:02 PME2:06 AMS252,321 mi
27
92%-8:20 AMWSW10:33 PMESE2:45 AMS251,704 mi
28
86%-8:11 AMWSW-3:24 AMS250,561 mi
29
79%12:08 AMESE8:02 AMSW-4:06 AMS248,841 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 Deltana is essentially constant during February, remaining around 0% throughout.

Humidity Comfort Levels in February in Deltana

Humidity Comfort Levels in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%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%NowNowdrydry
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 Deltana is gradually decreasing during February, decreasing from 6.6 miles per hour to 6.1 miles per hour over the course of the month.

For reference, on January 8, the windiest day of the year, the daily average wind speed is 6.9 miles per hour, while on July 13, the calmest day of the year, the daily average wind speed is 4.7 miles per hour.

Average Wind Speed in February in Deltana

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 Deltana throughout February is predominantly from the south, with a peak proportion of 62% on February 12.

Wind Direction in February in Deltana

Wind Direction in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%100%20%80%40%60%60%40%80%20%100%0%JanMarNowNowsoutheastwestnorth
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).

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 Deltana typically lasts for 3.8 months (116 days), from around May 14 to around September 7, rarely starting before April 29 or after May 30, and rarely ending before August 18 or after September 28.

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

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

Time Spent in Various Temperature Bands and the Growing Season in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290%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 15NowNowfrigidfreezingvery cold
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 Deltana are essentially constant during February, remaining around 0°F throughout.

Growing Degree Days in February in Deltana

Growing Degree Days in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290.0°F0.0°F0.1°F0.1°F0.2°F0.2°F0.3°F0.3°F0.4°F0.4°F0.5°F0.5°F0.6°F0.6°F0.7°F0.7°F0.8°F0.8°F0.9°F0.9°F1.0°F1.0°FJanMarFeb 10°FFeb 10°FFeb 290°FFeb 290°FFeb 110°FFeb 110°FFeb 210°FFeb 210°FNowNow
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 Deltana is increasing during February, rising by 1.1 kWh, from 0.4 kWh to 1.5 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in February in Deltana

Average Daily Incident Shortwave Solar Energy in February in DeltanaFeb112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829290.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWhJanMarFeb 10.4 kWhFeb 10.4 kWhFeb 291.5 kWhFeb 291.5 kWhFeb 110.7 kWhFeb 110.7 kWhNowNow
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 Deltana are 63.872 deg latitude, -145.218 deg longitude, and 1,220 ft elevation.

The topography within 2 miles of Deltana is essentially flat, with a maximum elevation change of 95 feet and an average elevation above sea level of 1,225 feet. Within 10 miles is essentially flat (4,495 feet). Within 50 miles also contains extreme variations in elevation (12,917 feet).

The area within 2 miles of Deltana is covered by trees (93%), within 10 miles by trees (42%) and cropland (21%), and within 50 miles by trees (39%) and shrubs (27%).

This report illustrates the typical weather in Deltana, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Deltana.

For each station, the records are corrected for the elevation difference between that station and Deltana 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 Deltana is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Deltana 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 Deltana 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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