Climate and monthly weather forecastUnion, ME
Climate and monthly weather forecast
Weather in January
January, the same as December, in Union, Maine, is another subzero cold winter month, with an average temperature varying between 29.8°F (-1.2°C) and 19.9°F (-6.7°C). With an average high-temperature of 29.8°F (-1.2°C) and an average low-temperature of 19.9°F (-6.7°C), January is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Union, Maine, with an average temperature fluctuating between 20.7°F (-6.3°C) and 31.3°F (-0.4°C). The arrival of February is marked by an average high-temperature of a still freezing cold 31.3°F (-0.4°C), bearing a close resemblance to January. Weather in February »Weather in March
March, the first month of the spring in Union, is a wintry month, with an average temperature fluctuating between 27°F (-2.8°C) and 37.2°F (2.9°C). March signifies a subtle uplift in the average high-temperature, adjusting from a subzero cold 31.3°F (-0.4°C) in February to an icy 37.2°F (2.9°C). Weather in March »Weather in April
April is a frosty spring month in Union, Maine, with an average temperature varying between 36.7°F (2.6°C) and 46.9°F (8.3°C). In April, the average high-temperature increases from a cold 37.2°F (2.9°C) in March to a chilly 46.9°F (8.3°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Union, Maine, with an average temperature varying between 45.1°F (7.3°C) and 56.1°F (13.4°C). The arrival of May signals an increase in the average high-temperature, moving from a frosty 46.9°F (8.3°C) in April to a moderate 56.1°F (13.4°C). Weather in May »Weather in June
The first month of the summer, June, is an enjoyable month in Union, Maine, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 63.7°F (17.6°C). June signals a minor shift in the average high-temperature, moving from May's mild 56.1°F (13.4°C) to a comfortable 63.7°F (17.6°C). Weather in June »Weather in July
July in Union, Maine, is a pleasant summer month, with an average temperature ranging between max 70.3°F (21.3°C) and min 59.4°F (15.2°C). Union observes a slight ascent in average high-temperatures during July, adjusting from an enjoyable 63.7°F (17.6°C) in June to an agreeable 70.3°F (21.3°C). Weather in July »Weather in August
August, the last month of the summer in Union, is also an agreeable month, with an average temperature fluctuating between 70.7°F (21.5°C) and 59.4°F (15.2°C). Union's temperature records reveal August as the warmest month, marked by average highs of 70.7°F (21.5°C) and lows of 59.4°F (15.2°C). Weather in August »Weather in September
The first month of the autumn, September, is still a refreshing month in Union, Maine, with an average temperature varying between 64.9°F (18.3°C) and 54°F (12.2°C). September signals a slight drop in average high-temperature, sliding from August's pleasant 70.7°F (21.5°C) to a refreshing 64.9°F (18.3°C). Weather in September »Weather in October
October, the same as September, in Union, Maine, is a moderate autumn month, with an average temperature varying between 45.9°F (7.7°C) and 55.4°F (13°C). The move into October indicates a reduction in the average high-temperature, down from September's refreshing 64.9°F (18.3°C) to a mild 55.4°F (13°C). Weather in October »Weather in November
November, the last month of the autumn in Union, is another chilly month, with temperature in the range of an average low of 35.8°F (2.1°C) and an average high of 44.8°F (7.1°C). The transition into November indicates a reduction in the average high-temperature, down to a chilly 44.8°F (7.1°C) from October's refreshing 55.4°F (13°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Union, Maine, with an average temperature fluctuating between 26.6°F (-3°C) and 35.8°F (2.1°C). The arrival of December signals a shift in temperature, down from a frosty 44.8°F (7.1°C) in November to a wintry 35.8°F (2.1°C). Weather in December »Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The month of January sees the average lowest temperatures in Union, reaching 29.8°F (-1.2°C) at the peak and 19.9°F (-6.7°C) at the low.
Throughout the year, in Union, there are 122.8 rainfall days, and 13.43" (341mm) of precipitation is accumulated.
January through April, November and December are months with snowfall in Union, Maine.
The month with the most snowfall is January, when snow falls for 8 days and typically aggregates up to 1.69" (43mm) of snow.
Throughout the year, in Union, there are 32.6 snowfall days, and 7.05" (179mm) of snow is accumulated.
The months with the lowest UV index in Union, Maine, are January through March, November and December, with an average maximum UV index of 2.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Union, Maine, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The wettest months are April, November and December, with an average 1.42" (36mm) of rainfall.
In Union, Maine, snow does not fall in May through October.
June and July, with an average relative humidity of 84%, are most humid months in Union, Maine.
With an average of 15h and 30min of daylight, June has the longest days of the year in Union, Maine.
The months with the highest UV index are June through August, with an average maximum UV index of 5.
The warmest period in Union, Maine, is August, when temperatures fluctuate between an average high of 70.7°F (21.5°C) and a low of 59.4°F (15.2°C).
With an average of 10.5h of sunshine, August has the most sunshine of the year in Union.
September is the month with the least rainfall in Union. Rain falls for 8.3 days and accumulates 0.75" (19mm) of precipitation.
The least humid month is November, with an average relative humidity of 76%.
The month with the shortest days is December, with an average of 8h and 54min of daylight.
December has the least sunshine of the year, with an average of 4.6h of sunshine.
Average temperature
Union, ME
The warmest month (with the highest average high temperature) is August (70.7°F).
The month with the lowest average high temperature is January (29.8°F).
The months with the highest average low temperature are July and August (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure
Union, ME
- Average pressure in January:
29.96"Hg - Average pressure in February:
29.95"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Union, ME
- Average wind speed in January:
12.9mph - Average wind speed in February:
12.7mph - Average wind speed in March:
12.5mph - Average wind speed in April:
10.9mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8.2mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
7.2mph - Average wind speed in September:
8.5mph - Average wind speed in October:
10.7mph - Average wind speed in November:
11.7mph - Average wind speed in December:
12.4mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity
Union, ME
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall
Union, ME
- Average rainfall in January:
1.22" - Average rainfall in February:
0.91" - Average rainfall in March:
0.83" - Average rainfall in April:
1.42" - Average rainfall in May:
1.06" - Average rainfall in June:
1.3"
- Average rainfall in July:
0.79" - Average rainfall in August:
0.94" - Average rainfall in September:
0.75" - Average rainfall in October:
1.38" - Average rainfall in November:
1.42" - Average rainfall in December:
1.42"
The wettest months (with the highest rainfall) are April, November and December (1.42").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days
Union, ME
- Average rainfall days in January:
6.8 days - Average rainfall days in February:
6.8 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
13 days
- Average rainfall days in July:
12 days - Average rainfall days in August:
10.7 days - Average rainfall days in September:
8.3 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is April (13.2 days).
The months with the least rainy days are January and February (6.8 days).
Average snowfall
Union, ME
The month with the highest snowfall is January (1.69").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Union, ME
- Average snowfall days in January:
8 days - Average snowfall days in February:
7.5 days - Average snowfall days in March:
6.3 days - Average snowfall days in April:
2.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
5.7 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Union, ME
- Average daylight in January:
9h and 18min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 30min
- Average daylight in July:
15h and 6min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 36min - Average daylight in December:
8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 42min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 36min - Average sunshine in May:
8h and 6min - Average sunshine in June:
8h and 48min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 24min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days
Union, ME
- Average sunshine days in January:
17 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
16.2 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
16.3 days - Average sunshine days in August:
17.8 days - Average sunshine days in September:
19.9 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
15.7 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is April (13.8 days).
Average UV index
Union, ME
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Union, ME
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Union, ME
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
