Climate and monthly weather forecastWashington, CT
Climate and monthly weather forecast
Weather in January
January, the same as December, in Washington, Connecticut, is another subzero cold winter month, with an average temperature fluctuating between 31.5°F (-0.3°C) and 19.8°F (-6.8°C). January, having an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Washington, Connecticut, with an average temperature ranging between min 20.7°F (-6.3°C) and max 34.9°F (1.6°C). Washington records an average high-temperature of a wintry 34.9°F (1.6°C) in February, closely mirroring the climate of the previous month. Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Washington, Connecticut, with an average temperature ranging between max 42.8°F (6°C) and min 28°F (-2.2°C). Washington's weather shows a minor temperature rise with the arrival of March, moving from a wintry 34.9°F (1.6°C) in February to a frosty 42.8°F (6°C). Weather in March »Weather in April
April is a moderate spring month in Washington, Connecticut, with an average temperature ranging between max 55.8°F (13.2°C) and min 38.3°F (3.5°C). The start of April is characterized by an increase in the average high-temperature, transitioning from a frosty 42.8°F (6°C) in March to a moderate 55.8°F (13.2°C). Weather in April »Weather in May
May, the last month of the spring in Washington, is an agreeable month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 68°F (20°C). A rise in the average high-temperature is observed during May, moving from a refreshing 55.8°F (13.2°C) in April to an agreeable 68°F (20°C). Weather in May »Weather in June
June, the first month of the summer in Washington, is a warm month, with an average temperature varying between 75.2°F (24°C) and 55.6°F (13.1°C). As May gives way to June, the average high-temperature displays a slight ascent, adjusting from a pleasant 68°F (20°C) to a warm 75.2°F (24°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Washington, Connecticut, with an average temperature fluctuating between 61.3°F (16.3°C) and 81.7°F (27.6°C). In Washington, Connecticut, July is the month with the highest recorded average temperatures, measuring a high of 81.7°F (27.6°C) and a low of 61.3°F (16.3°C). For July, the heat index is estimated at a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Washington, Connecticut, with an average temperature fluctuating between 79.9°F (26.6°C) and 59.9°F (15.5°C). Shifting into August, Washington records an average high-temperature of a still warm 79.9°F (26.6°C), presenting minor fluctuations compared to the previous month. Weather in August »Weather in September
September, the first month of the autumn in Washington, is also an agreeable month, with an average temperature fluctuating between 53.4°F (11.9°C) and 72.3°F (22.4°C). The arrival of September signals a subtle shift in temperature, down from a warm 79.9°F (26.6°C) in August to a pleasant 72.3°F (22.4°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Washington, Connecticut, with an average temperature ranging between max 59.9°F (15.5°C) and min 45°F (7.2°C). October shows a mild decline in the average high-temperature, falling from September's agreeable 72.3°F (22.4°C) to a moderate 59.9°F (15.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Washington, Connecticut, with an average temperature ranging between max 47.1°F (8.4°C) and min 33.8°F (1°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a refreshing 59.9°F (15.5°C) to a chilly 47.1°F (8.4°C). Weather in November »Weather in December
December, the first month of the winter in Washington, is also an icy month, with an average temperature varying between 26.6°F (-3°C) and 37°F (2.8°C). Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 47.1°F (8.4°C) to an icy 37°F (2.8°C). Weather in December »Updated: Feb 10, 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
With an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.8°F (-6.8°C), January is the coldest month in Washington, Connecticut.
January is the month with the least rainfall in Washington. Rain falls for 7.7 days and accumulates 2.13" (54mm) of precipitation.
Throughout the year, in Washington, there are 161.7 rainfall days, and 34.41" (874mm) of precipitation is accumulated.
Months with snowfall in Washington are January through May, October through December.
Throughout the year, in Washington, there are 38.3 snowfall days, and 19.84" (504mm) of snow is accumulated.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.
The most humid month in Washington, Connecticut, is February, with an average relative humidity of 81%.
The month with the most snowfall in Washington is February, when snow falls for 10.5 days and typically aggregates up to 5.16" (131mm) of snow.
The month with the least sunshine is February, with an average of 4.3h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Washington, 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 least humid month in Washington, Connecticut, is April, with an average relative humidity of 73%.
In Washington, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 6min of daylight.
June is the month with the highest UV index in Washington, Connecticut, with an average maximum UV index of 6.
July, with average temperatures reaching a high of 81.7°F (27.6°C) and a low of 61.3°F (16.3°C), is the warmest month.
July is the month with the most rainfall in Washington, Connecticut. Rain falls for 18.3 days and accumulates 3.7" (94mm) of precipitation.
With an average of 10.1h of sunshine, July has the most sunshine of the year.
December has the shortest days of the year, with an average of 9h and 12min of daylight.
Average temperature
Washington, CT
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Washington, CT
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"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:
30.06"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
Washington, CT
- Average wind speed in January:
7.8mph - Average wind speed in February:
7.7mph - Average wind speed in March:
7.9mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.5mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7.1mph - Average wind speed in December:
7.4mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Washington, CT
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Washington, CT
- Average rainfall in January:
2.13" - Average rainfall in February:
2.17" - Average rainfall in March:
2.48" - Average rainfall in April:
2.87" - Average rainfall in May:
3.03" - Average rainfall in June:
3.19"
- Average rainfall in July:
3.7" - Average rainfall in August:
3.03" - Average rainfall in September:
2.36" - Average rainfall in October:
3.23" - Average rainfall in November:
2.87" - Average rainfall in December:
3.35"
The wettest month (with the highest rainfall) is July (3.7").
The driest month (with the least rainfall) is January (2.13").
Average rainfall days
Washington, CT
- Average rainfall days in January:
7.7 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
17.7 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
16.9 days - Average rainfall days in September:
13.7 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).
Average snowfall
Washington, CT
- Average snowfall in January:
4.37" - Average snowfall in February:
5.16" - Average snowfall in March:
4.33" - Average snowfall in April:
1.1" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Washington, CT
- Average snowfall days in January:
8.6 days - Average snowfall days in February:
10.5 days - Average snowfall days in March:
7.8 days - Average snowfall days in April:
1.4 days - Average snowfall days in May:
0.2 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:
2.4 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Washington, 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 48min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 6min - Average sunshine in June:
9h and 12min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days
Washington, CT
- Average sunshine days in January:
17.5 days - Average sunshine days in February:
13.2 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
11.9 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
16.7 days - Average sunshine days in December:
15.7 days
The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Washington, CT
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Washington, CT
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility
Washington, CT
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
