Climate and monthly weather forecastPlantsville, CT
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Plantsville, Connecticut, with an average temperature ranging between min 21.9°F (-5.6°C) and max 33.6°F (0.9°C). January, with an average high of 33.6°F (0.9°C) and a low of 21.9°F (-5.6°C), signifies the coldest month of the year. Weather in January »Weather in February
February, the last month of the winter in Plantsville, is also an icy month, with an average temperature fluctuating between 37°F (2.8°C) and 22.8°F (-5.1°C). January's transformation into February witnesses an average high-temperature of a still cold 37°F (2.8°C), noting a minor change from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Plantsville, Connecticut, with an average temperature varying between 30.2°F (-1°C) and 44.6°F (7°C). A slight uplift in the average high-temperature marks March, adjusting from February's cold 37°F (2.8°C) to a frosty 44.6°F (7°C). Weather in March »Weather in April
April is a moderate spring month in Plantsville, Connecticut, with temperature in the range of an average high of 56.8°F (13.8°C) and an average low of 39.9°F (4.4°C). The rise of average high-temperatures is seen in April, with an increase from a frosty 44.6°F (7°C) in March to a refreshing 56.8°F (13.8°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Plantsville, Connecticut, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 68.5°F (20.3°C). The average high-temperature increases in May, moving from a moderate 56.8°F (13.8°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Plantsville, Connecticut, with an average temperature ranging between min 57.4°F (14.1°C) and max 76.1°F (24.5°C). June's arrival sees a mild rise in the average high-temperature, transitioning from May's pleasant 68.5°F (20.3°C) to a moderately hot 76.1°F (24.5°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Plantsville, Connecticut, with an average temperature ranging between min 64°F (17.8°C) and max 82.9°F (28.3°C). July is the warmest month of the year, registering average temperatures as high as 82.9°F (28.3°C) and as low as 64°F (17.8°C). July's heat index is computed to be a hot 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Plantsville, is also a moderately hot month, with an average temperature ranging between min 63°F (17.2°C) and max 80.8°F (27.1°C). August begins with an average high-temperature of a still warm 80.8°F (27.1°C), reflecting close similarity to the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Plantsville, is also a moderately hot month, with an average temperature varying between 73.6°F (23.1°C) and 56.3°F (13.5°C). The advent of September brings a subtle shift in temperature, with the average high moving from 80.8°F (27.1°C) in August to a still moderately hot 73.6°F (23.1°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Plantsville, Connecticut, with an average temperature fluctuating between 61.7°F (16.5°C) and 47.1°F (8.4°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's moderately hot 73.6°F (23.1°C) to a refreshing 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Plantsville, Connecticut, with an average temperature ranging between min 36.5°F (2.5°C) and max 49.1°F (9.5°C). Onset of November comes with a temperature decline, the average high falling from an enjoyable 61.7°F (16.5°C) in October to a chilly 49.1°F (9.5°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Plantsville, Connecticut, with an average temperature ranging between max 39.7°F (4.3°C) and min 29.1°F (-1.6°C). December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 49.1°F (9.5°C) to a wintry 39.7°F (4.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Plantsville, CT
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.6°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure
Plantsville, CT
- Average pressure in January:
30.03"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Plantsville, CT
- Average wind speed in January:
8.3mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.3mph - Average wind speed in April:
7.9mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6mph - Average wind speed in October:
7.1mph - Average wind speed in November:
7.5mph - Average wind speed in December:
8mph
The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity
Plantsville, CT
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Plantsville, CT
- Average rainfall in January:
2.48" - Average rainfall in February:
2.48" - Average rainfall in March:
2.8" - Average rainfall in April:
3.11" - Average rainfall in May:
2.68" - Average rainfall in June:
3.03"
- Average rainfall in July:
3.07" - Average rainfall in August:
2.72" - Average rainfall in September:
1.97" - Average rainfall in October:
3.35" - Average rainfall in November:
3.07" - Average rainfall in December:
3.82"
The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days
Plantsville, CT
- Average rainfall days in January:
8.4 days - Average rainfall days in February:
9.2 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
15.4 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
17.3 days - Average rainfall days in August:
16.6 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.4 days).
Average snowfall
Plantsville, CT
- Average snowfall in January:
3.07" - Average snowfall in February:
3.78" - Average snowfall in March:
4.06" - Average snowfall in April:
0.71" - Average snowfall in May:
0.43" - Average snowfall in June:
0"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Plantsville, CT
- Average snowfall days in January:
7.5 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
6.5 days - Average snowfall days in April:
0.9 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:
0.1 days - Average snowfall days in November:
1.1 days - Average snowfall days in December:
5.4 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Plantsville, CT
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 12min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Plantsville, CT
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
12.8 days - Average sunshine days in April:
12.5 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
12.1 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
14.7 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (10.9 days).
Average UV index
Plantsville, CT
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Plantsville, CT
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility
Plantsville, CT
The months with the highest visibility are January, March, April, August, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July and September (5mi).





