Climate and monthly weather forecastWinthrop, ME
Climate and monthly weather forecast
Weather in January
January, the same as December, in Winthrop, Maine, is a freezing cold winter month, with an average temperature fluctuating between 27°F (-2.8°C) and 13.6°F (-10.2°C). With average temperatures fluctuating between a high of 27°F (-2.8°C) and a low of 13.6°F (-10.2°C), January stands out as the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Winthrop, Maine, with an average temperature varying between 28.8°F (-1.8°C) and 15.3°F (-9.3°C). February's weather displays an average high-temperature of a still freezing cold 28.8°F (-1.8°C), slightly varied from January's 27°F (-2.8°C). Weather in February »Weather in March
The first month of the spring, March, is an icy month in Winthrop, Maine, with temperature in the range of an average high of 37°F (2.8°C) and an average low of 22.5°F (-5.3°C). The shift from February to March sees a slight increase in the average high-temperature, transitioning from a freezing cold 28.8°F (-1.8°C) to a wintry 37°F (2.8°C). Weather in March »Weather in April
April is a cool spring month in Winthrop, Maine, with an average temperature fluctuating between 50°F (10°C) and 34°F (1.1°C). The start of April is characterized by an increase in the average high-temperature, transitioning from a cold 37°F (2.8°C) in March to a cool 50°F (10°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Winthrop, Maine, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 61.7°F (16.5°C). The start of May signals an increase in the average high-temperature, moving from a cool 50°F (10°C) in April to a comfortable 61.7°F (16.5°C). Weather in May »Weather in June
June, the first month of the summer in Winthrop, is a pleasant month, with an average temperature ranging between max 69.4°F (20.8°C) and min 50.7°F (10.4°C). As June arrives, a slight rise in the average high-temperature is observed, moving from a refreshing 61.7°F (16.5°C) in May to an agreeable 69.4°F (20.8°C). Weather in June »Weather in July
July in Winthrop, Maine, is a moderately hot summer month, with an average temperature fluctuating between 76.6°F (24.8°C) and 57.7°F (14.3°C). The highest temperatures are recorded in July, with averages reaching a high of 76.6°F (24.8°C) and a low of 57.7°F (14.3°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Winthrop, Maine, with temperature in the range of an average high of 76.1°F (24.5°C) and an average low of 56.8°F (13.8°C). August's beginning signals an average high-temperature of a still moderately hot 76.1°F (24.5°C), barely different from July's 76.6°F (24.8°C). Weather in August »Weather in September
September, the first month of the autumn in Winthrop, is also an agreeable month, with an average temperature fluctuating between 68.9°F (20.5°C) and 50.5°F (10.3°C). September signals a slight drop in average high-temperature, sliding from August's warm 76.1°F (24.5°C) to an agreeable 68.9°F (20.5°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Winthrop, Maine, with an average temperature ranging between min 41.9°F (5.5°C) and max 56.3°F (13.5°C). Winthrop's progression into October involves a drop in the average high-temperature, receding from a pleasant 68.9°F (20.5°C) in September to a mild 56.3°F (13.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Winthrop, Maine, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 43.7°F (6.5°C). As November arrives, Winthrop's weather displays a decrease in high-temperatures, transitioning from October's refreshing 56.3°F (13.5°C) to a chilly 43.7°F (6.5°C). Weather in November »Weather in December
December, the first month of the winter in Winthrop, is also a wintry month, with an average temperature fluctuating between 22.1°F (-5.5°C) and 32.5°F (0.3°C). Winthrop, Maine, in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 43.7°F (6.5°C) to an icy 32.5°F (0.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Winthrop, ME
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (27°F).
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure
Winthrop, ME
- Average pressure in January:
29.97"Hg - Average pressure in February:
29.96"Hg - Average pressure in March:
30.01"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:
30.04"Hg - Average pressure in December:
30.01"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Winthrop, ME
- Average wind speed in January:
8.2mph - Average wind speed in February:
8.3mph - Average wind speed in March:
8.5mph - Average wind speed in April:
8mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
Winthrop, ME
The months with the highest relative humidity are January, February and March (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall
Winthrop, ME
- Average rainfall in January:
2.05" - Average rainfall in February:
1.97" - Average rainfall in March:
2.05" - Average rainfall in April:
2.83" - Average rainfall in May:
2.28" - Average rainfall in June:
2.68"
- Average rainfall in July:
1.65" - Average rainfall in August:
2.28" - Average rainfall in September:
1.42" - Average rainfall in October:
2.95" - Average rainfall in November:
2.52" - Average rainfall in December:
2.83"
The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days
Winthrop, ME
- Average rainfall days in January:
7 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
15.5 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
14.4 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
9.8 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
10 days - Average rainfall days in December:
10.4 days
The month with the highest number of rainy days is June (16 days).
The month with the least rainy days is January (7 days).
Average snowfall
Winthrop, ME
- Average snowfall in January:
6.3" - Average snowfall in February:
6.77" - Average snowfall in March:
4.88" - Average snowfall in April:
4.25" - Average snowfall in May:
0.63" - Average snowfall in June:
0"
The month with the highest snowfall is February (6.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Winthrop, ME
- Average snowfall days in January:
10.9 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
10.7 days - Average snowfall days in April:
4.3 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
3.9 days - Average snowfall days in December:
9.1 days
The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Winthrop, 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:
5h and 6min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 24min - Average sunshine in May:
7h and 54min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
9h and 48min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Winthrop, ME
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
12.7 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
12.1 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
16.5 days - Average sunshine days in December:
14.8 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (11.6 days).
Average UV index
Winthrop, 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, October, November and December (UV index 2).
Average cloud cover
Winthrop, ME
The months with the most cloud cover are March and April (Cloud cover 52).
The months with the least cloud cover are August and September (Cloud cover 36).
Average visibility
Winthrop, ME
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).





