Rockland, ME - Detailed climate information and monthly weather forecast

Frequently asked questions
Average temperature
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index

A US flag flying outside a lighthouse on the water in Rockland, Maine

What is the coldest month in Rockland?

With an average high-temperature of 30°F (-1.1°C) and an average low-temperature of 10°F (-12.2°C), January is the coldest month in Rockland.

How much does it rain in Rockland?

Throughout the year, in Rockland, there are 136 rainfall days, and 53.3" (1354.8mm) of precipitation is accumulated.

What are the warmest months in Rockland?

July and August, with an average high-temperature of 75.9°F (24.4°C), are warmest months.

What is the driest month in Rockland?

August is the month with the least rainfall. Rain falls for 10 days and accumulates 3.3" (83.3mm) of precipitation.

What is the wettest month in Rockland?

November is the month with the most rainfall in Rockland. Rain falls for 12 days and accumulates 5.7" (145mm) of precipitation.

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Long-term

Climate J F M A M J J A S O N D Year

Average high temperature in January:
-1.1°C
Average high temperature in February:
0.6°C
Average high temperature in March:
4.4°C
Average high temperature in April:
11.1°C
Average high temperature in May:
16.7°C
Average high temperature in June:
21.7°C

Average high temperature in July:
24.4°C
Average high temperature in August:
24.4°C
Average high temperature in September:
20°C
Average high temperature in October:
13.9°C
Average high temperature in November:
8.3°C
Average high temperature in December:
2.2°C

Warmest months (with the highest average high temperature) are July and August (24.4°C).
The month with the lowest average high temperature is January (-1.1°C).

Average low temperature in January:
-12.2°C
Average low temperature in February:
-10°C
Average low temperature in March:
-5.6°C
Average low temperature in April:
0.6°C
Average low temperature in May:
6.1°C
Average low temperature in June:
11.7°C

Average low temperature in July:
15°C
Average low temperature in August:
14.4°C
Average low temperature in September:
10°C
Average low temperature in October:
3.9°C
Average low temperature in November:
-1.1°C
Average low temperature in December:
-7.8°C

The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-12.2°C).

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The wettest month (with the highest rainfall) is November (145mm).
The driest month (with the lowest rainfall) is August (83.3mm).

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Average rainfall days in January:
12 days
Average rainfall days in February:
10 days
Average rainfall days in March:
12 days
Average rainfall days in April:
12 days
Average rainfall days in May:
12 days
Average rainfall days in June:
12 days

Average rainfall days in July:
11 days
Average rainfall days in August:
10 days
Average rainfall days in September:
9 days
Average rainfall days in October:
11 days
Average rainfall days in November:
12 days
Average rainfall days in December:
13 days

The month with the highest number of rainy days is December (13 days).
The month with the lowest number of rainy days is September (9 days).

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Average sea temperature in January:
5.1°C
Average sea temperature in February:
3.7°C
Average sea temperature in March:
3.3°C
Average sea temperature in April:
4.8°C
Average sea temperature in May:
7.3°C
Average sea temperature in June:
11.1°C

Average sea temperature in July:
14.7°C
Average sea temperature in August:
15.8°C
Average sea temperature in September:
14.6°C
Average sea temperature in October:
12.3°C
Average sea temperature in November:
9.5°C
Average sea temperature in December:
7.3°C

The best month for swimming (with the highest average sea temperature) is August (15.8°C).
The coldest month (with the lowest average sea temperature) is March (3.3°C).

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Average daylight / Average sunshine - Rockland, ME

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 8.9h).

Months with most sunshine are June, July and August (Average sunshine: 8h).
Months with least sunshine are January, November and December (Average sunshine: 4).

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