Climate and monthly weather forecastProspect Harbor, ME
Climate and monthly weather forecast
Weather in January
January, the same as December, in Prospect Harbor, Maine, is another subzero cold winter month, with an average temperature fluctuating between 18.5°F (-7.5°C) and 29.7°F (-1.3°C). The coldest time of the year is January, with temperatures averaging a high of 29.7°F (-1.3°C) and a low of 18.5°F (-7.5°C). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Prospect Harbor, Maine, with an average temperature varying between 30.7°F (-0.7°C) and 18.9°F (-7.3°C). Prospect Harbor, Maine, registers an average high-temperature of a still freezing cold 30.7°F (-0.7°C) at the commencement of February, closely related to the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a wintry month in Prospect Harbor, Maine, with an average temperature varying between 25.9°F (-3.4°C) and 37.2°F (2.9°C). The arrival of March introduces a minor uplift in high-temperatures, adjusting from a subzero cold 30.7°F (-0.7°C) in February to a wintry 37.2°F (2.9°C). Weather in March »Weather in April
April in Prospect Harbor, Maine, is a chilly spring month, with an average temperature fluctuating between 35.6°F (2°C) and 48.6°F (9.2°C). April brings an increase in the average high-temperature, progressing from a wintry 37.2°F (2.9°C) in March to a frosty 48.6°F (9.2°C). Weather in April »Weather in May
May, the last month of the spring in Prospect Harbor, is a refreshing month, with an average temperature varying between 58.6°F (14.8°C) and 44.2°F (6.8°C). The arrival of May brings a temperature shift, with the average high-temperature escalating from a frosty 48.6°F (9.2°C) in April to a refreshing 58.6°F (14.8°C). Weather in May »Weather in June
June, the first month of the summer in Prospect Harbor, is a refreshing month, with an average temperature varying between 66°F (18.9°C) and 51.4°F (10.8°C). Prospect Harbor's June weather indicates a minor ascent in high-temperatures, adjusting from a moderate 58.6°F (14.8°C) in May to a still refreshing 66°F (18.9°C). Weather in June »Weather in July
July is a pleasant summer month in Prospect Harbor, Maine, with an average temperature varying between 58.1°F (14.5°C) and 73.2°F (22.9°C). With the transition into July, Prospect Harbor experiences a subtle uplift in average high-temperatures, adjusting from an enjoyable 66°F (18.9°C) in June to an agreeable 73.2°F (22.9°C). Weather in July »Weather in August
The last month of the summer, August, is a moderately hot month in Prospect Harbor, Maine, with an average temperature fluctuating between 57.7°F (14.3°C) and 73.4°F (23°C). August registers as the month with the highest average temperatures, reaching 73.4°F (23°C) at its peak and 57.7°F (14.3°C) at the lowest. Weather in August »Weather in September
The first month of the autumn, September, is still a refreshing month in Prospect Harbor, Maine, with an average temperature varying between 52.7°F (11.5°C) and 67.1°F (19.5°C). With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 73.4°F (23°C) in August to an enjoyable 67.1°F (19.5°C). Weather in September »Weather in October
October, the same as September, in Prospect Harbor, Maine, is another refreshing autumn month, with an average temperature fluctuating between 55.9°F (13.3°C) and 45°F (7.2°C). As September transitions into October, Prospect Harbor sees a drop in the average high-temperature, transitioning from a refreshing 67.1°F (19.5°C) to a mild 55.9°F (13.3°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Prospect Harbor, Maine, with an average temperature varying between 34.7°F (1.5°C) and 44.8°F (7.1°C). November is characterized by a reduction in the average high-temperature, from a mild 55.9°F (13.3°C) in October to a frosty 44.8°F (7.1°C). Weather in November »Weather in December
December, the first month of the winter in Prospect Harbor, is also an icy month, with an average temperature fluctuating between 35.1°F (1.7°C) and 25.7°F (-3.5°C). Prospect Harbor's transition into December involves a shift in temperature, receding from a chilly 44.8°F (7.1°C) in November to a wintry 35.1°F (1.7°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Prospect Harbor, ME
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure
Prospect Harbor, ME
- Average pressure in January:
29.95"Hg - Average pressure in February:
29.94"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:
30.02"Hg - Average pressure in December:
29.99"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
Prospect Harbor, ME
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
9.2mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.3mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.5mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity
Prospect Harbor, ME
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall
Prospect Harbor, ME
- Average rainfall in January:
3.19" - Average rainfall in February:
2.52" - Average rainfall in March:
2.44" - Average rainfall in April:
3.5" - Average rainfall in May:
2.28" - Average rainfall in June:
2.6"
- Average rainfall in July:
1.57" - Average rainfall in August:
1.73" - Average rainfall in September:
1.81" - Average rainfall in October:
3.35" - Average rainfall in November:
3.35" - Average rainfall in December:
3.94"
The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days
Prospect Harbor, ME
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
7.5 days - Average rainfall days in March:
11.3 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
13.8 days
- Average rainfall days in July:
13 days - Average rainfall days in August:
10.4 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
14 days - Average rainfall days in November:
11.7 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is April (15.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall
Prospect Harbor, ME
- Average snowfall in January:
5.31" - Average snowfall in February:
5.75" - Average snowfall in March:
4.13" - Average snowfall in April:
2.44" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Prospect Harbor, ME
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
11.4 days - Average snowfall days in March:
9.4 days - Average snowfall days in April:
3.1 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:
0.3 days - Average snowfall days in November:
4.1 days - Average snowfall days in December:
7.9 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Prospect Harbor, 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 30min - Average sunshine in February:
4h and 6min - Average sunshine in March:
5h and 12min - Average sunshine in April:
7h and 12min - Average sunshine in May:
7h and 48min - Average sunshine in June:
8h and 36min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
10h and 6min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 24min
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 6min).
Average sunshine days
Prospect Harbor, ME
- Average sunshine days in January:
14.4 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
16.6 days - Average sunshine days in August:
18.7 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
15.7 days - Average sunshine days in December:
14.1 days
The month with the most sunshine days is August (18.7 days).
The month with the least sunshine days is April (11.2 days).
Average UV index
Prospect Harbor, 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
Prospect Harbor, ME
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility
Prospect Harbor, ME
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





