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July Weather in Vinalhaven Maine, United States

Daily high temperatures increase by 2°F, from 69°F to 71°F, rarely falling below 61°F or exceeding 79°F. The highest daily average high temperature is 71°F on July 26.

Daily low temperatures increase by 3°F, from 55°F to 59°F, rarely falling below 50°F or exceeding 64°F.

For reference, on July 25, the hottest day of the year, temperatures in Vinalhaven typically range from 58°F to 71°F, while on January 29, the coldest day of the year, they range from 18°F to 33°F.

Average High and Low Temperature in July in Vinalhaven

Average High and Low Temperature in July in VinalhavenJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313140°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°FJunAugJul 2571°FJul 2571°F58°F58°FJul 169°FJul 169°F55°F55°FJul 1171°FJul 1171°F57°F57°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 July. 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 July in Vinalhaven

Average Hourly Temperature in July in VinalhavenJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJunAugcoldcoldcoolcomfortable
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.

Klaipėda, Lithuania (3,799 miles away) is the far-away foreign place with temperatures most similar to Vinalhaven (view comparison).

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The month of July in Vinalhaven experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 43% throughout the month.

The clearest day of the month is July 25, with clear, mostly clear, or partly cloudy conditions 58% of the time.

For reference, on May 15, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on September 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%.

Cloud Cover Categories in July in Vinalhaven

Cloud Cover Categories in July in VinalhavenJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAugJul 155%Jul 155%Jul 3157%Jul 3157%Jul 1156%Jul 1156%Jul 2157%Jul 2157%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 Vinalhaven, the chance of a wet day over the course of July is essentially constant, remaining around 28% throughout.

For reference, the year's highest daily chance of a wet day is 33% on December 10, and its lowest chance is 21% on August 29.

Probability of Precipitation in July in Vinalhaven

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 July in Vinalhaven is essentially constant, remaining about 2.7 inches throughout, and rarely exceeding 5.6 inches or falling below 0.9 inches.

Average Monthly Rainfall in July in Vinalhaven

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.

Over the course of July in Vinalhaven, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 49 minutes, implying an average daily decrease of 1 minute, 37 seconds, and weekly decrease of 11 minutes, 20 seconds.

The shortest day of the month is July 31, with 14 hours, 37 minutes of daylight and the longest day is July 1, with 15 hours, 26 minutes of daylight.

Hours of Daylight and Twilight in July in Vinalhaven

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 earliest sunrise of the month in Vinalhaven is 4:56 AM on July 1 and the latest sunrise is 26 minutes later at 5:22 AM on July 31.

The latest sunset is 8:22 PM on July 1 and the earliest sunset is 22 minutes earlier at 7:59 PM on July 31.

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

For reference, on June 20, the longest day of the year, the Sun rises at 4:52 AM and sets 15 hours, 30 minutes later, at 8:21 PM, while on December 21, the shortest day of the year, it rises at 7:07 AM and sets 8 hours, 53 minutes later, at 4:00 PM.

Sunrise & Sunset with Twilight in July in Vinalhaven

The solar day over the course of July. 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 July in Vinalhaven

Solar Elevation and Azimuth in July in VinalhavenJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJunAug00101020202030304040505050606000010102020303030404050506060
northeastsouthwest
Solar elevation and azimuth over the course of July 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 July 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 July in Vinalhaven

Moon Rise, Set & Phases in July in VinalhavenJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJunAugJun 68:38 AMJun 68:38 AMJun 219:09 PMJun 219:09 PMJul 56:58 PMJul 56:58 PMJul 216:18 AMJul 216:18 AMAug 47:14 AMAug 47:14 AMAug 192:26 PMAug 192:26 PM4:24 AM4:24 AM9:05 PM9:05 PM8:42 PM8:42 PM4:50 AM4:50 AM4:02 AM4:02 AM8:47 PM8:47 PM8:16 PM8:16 PM4:54 AM4:54 AM5:13 AM5:13 AM8:27 PM8:27 PM7:51 PM7:51 PM6:33 AM6:33 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.
Jul 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
22%1:14 AMENE4:19 PMWNW-8:41 AMS232,133 mi
2
13%1:43 AMENE5:37 PMNW-9:34 AMS233,604 mi
3
6%2:19 AMNE6:50 PMNW-10:31 AMS235,398 mi
4
2%3:05 AMNE7:55 PMNW-11:29 AMS237,497 mi
5
0%4:02 AMNE8:47 PMNW-12:27 PMS239,842 mi
6
1%5:08 AMNE9:28 PMNW-1:22 PMS242,326 mi
7
3%6:17 AMNE9:59 PMWNW-2:13 PMS244,803 mi
8
8%7:27 AMENE10:24 PMWNW-3:00 PMS247,099 mi
9
15%8:35 AMENE10:44 PMWNW-3:44 PMS249,035 mi
10
22%9:40 AMENE11:02 PMW-4:24 PMS250,443 mi
11
31%10:43 AME11:18 PMW-5:03 PMS251,178 mi
12
40%11:45 AME11:34 PMW-5:41 PMS251,138 mi
13
50%12:48 PMESE11:52 PMWSW-6:21 PMS250,275 mi
14
60%1:52 PMESE--7:02 PMS248,601 mi
15
69%-12:11 AMWSW2:59 PMESE7:47 PMS246,199 mi
16
78%-12:35 AMWSW4:08 PMESE8:36 PMS243,217 mi
17
87%-1:04 AMSW5:18 PMSE9:31 PMS239,870 mi
18
93%-1:43 AMSW6:26 PMSE10:30 PMS236,423 mi
19
98%-2:34 AMSW7:26 PMSE11:32 PMS233,172 mi
20
99%-3:39 AMSW8:16 PMSE--
21
100%-4:54 AMSW8:55 PMESE12:35 AMS230,400 mi
22
99%-6:15 AMWSW9:26 PMESE1:35 AMS228,335 mi
23
95%-7:37 AMWSW9:51 PMESE2:31 AMS227,109 mi
24
89%-8:58 AMWSW10:13 PME3:23 AMS226,749 mi
25
80%-10:16 AMW10:33 PME4:12 AMS227,184 mi
26
70%-11:34 AMW10:54 PMENE5:00 AMS228,281 mi
27
50%-12:51 PMWNW11:18 PMENE5:48 AMS229,873 mi
28
46%-2:09 PMWNW11:45 PMENE6:38 AMS231,798 mi
29
35%-3:26 PMNW-7:30 AMS233,921 mi
30
25%12:18 AMNE4:41 PMNW-8:25 AMS236,143 mi
31
16%1:01 AMNE5:47 PMNW-9:22 AMS238,402 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 Vinalhaven is increasing during July, rising from 3% to 9% over the course of the month.

For reference, on August 2, the muggiest day of the year, there are muggy conditions 9% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in July in Vinalhaven

Humidity Comfort Levels in July in VinalhavenJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JunAugJul 13%Jul 13%Jul 319%Jul 319%Jul 115%Jul 115%Jul 217%Jul 217%muggymuggyhumidhumidcomfortablecomfortabledrydry
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 Vinalhaven is essentially constant during July, remaining within 0.2 miles per hour of 7.5 miles per hour throughout.

For reference, on January 13, the windiest day of the year, the daily average wind speed is 14.5 miles per hour, while on August 7, the calmest day of the year, the daily average wind speed is 7.2 miles per hour.

Average Wind Speed in July in Vinalhaven

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 Vinalhaven throughout July is predominantly from the south, with a peak proportion of 43% on July 13.

Wind Direction in July in Vinalhaven

Wind Direction in July in VinalhavenJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JunAugwestsouthnortheast
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).

Vinalhaven 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 Vinalhaven is increasing during July, rising by 4°F, from 54°F to 58°F, over the course of the month.

Average Water Temperature in July in Vinalhaven

Average Water Temperature in July in VinalhavenJul112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313144°F44°F46°F46°F48°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°F60°F60°F62°F62°FJunAugJul 154°FJul 154°FJul 3158°FJul 3158°FJul 1156°FJul 1156°FJul 2157°FJul 2157°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 Vinalhaven typically lasts for 5.9 months (181 days), from around April 25 to around October 23, rarely starting before April 8 or after May 10, and rarely ending before October 4 or after November 11.

The month of July in Vinalhaven is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in July in Vinalhaven

Time Spent in Various Temperature Bands and the Growing Season in July in Vinalhavengrowing seasongrowing seasongrowing seasonJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JunAug100%Jul 16100%Jul 16coldcoolcomfortablewarmvery 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 Vinalhaven are increasing during July, increasing by 416°F, from 377°F to 792°F, over the course of the month.

Growing Degree Days in July in Vinalhaven

The average growing degree days accumulated over the course of July, 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 Vinalhaven is gradually decreasing during July, falling by 0.5 kWh, from 6.8 kWh to 6.3 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in July in Vinalhaven

Average Daily Incident Shortwave Solar Energy in July in VinalhavenJul11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJunAugJul 16.8 kWhJul 16.8 kWhJul 316.3 kWhJul 316.3 kWhJul 116.7 kWhJul 116.7 kWhJul 216.6 kWhJul 216.6 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 Vinalhaven are 44.048 deg latitude, -68.832 deg longitude, and 52 ft elevation.

The topography within 2 miles of Vinalhaven contains only modest variations in elevation, with a maximum elevation change of 177 feet and an average elevation above sea level of 31 feet. Within 10 miles also contains only modest variations in elevation (272 feet). Within 50 miles contains only modest variations in elevation (1,532 feet).

The area within 2 miles of Vinalhaven is covered by water (50%), trees (36%), and herbaceous vegetation (12%), within 10 miles by water (91%), and within 50 miles by water (65%) and trees (32%).

This report illustrates the typical weather in Vinalhaven, 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 Vinalhaven.

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