Climate and monthly weather forecastGranby, CT
Climate and monthly weather forecast
Weather in January
January, the same as December, in Granby, Connecticut, is another subzero cold winter month, with an average temperature varying between 18.9°F (-7.3°C) and 31.5°F (-0.3°C). January is the month that records the lowest temperatures, with averages ranging from a high of 31.5°F (-0.3°C) to a low of 18.9°F (-7.3°C). Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Granby, Connecticut, with an average temperature fluctuating between 34.2°F (1.2°C) and 19.4°F (-7°C). Granby ushers in February with an average high-temperature of a wintry 34.2°F (1.2°C), showing a close resemblance to the previous month. Weather in February »Weather in March
March, the first month of the spring in Granby, is still a cold month, with temperature in the range of an average high of 42.4°F (5.8°C) and an average low of 27.7°F (-2.4°C). March brings a slight rise in Granby's average high-temperature, moving from 34.2°F (1.2°C) in February to a still icy 42.4°F (5.8°C). Weather in March »Weather in April
April in Granby, Connecticut, is a mild spring month, with an average temperature ranging between max 56.1°F (13.4°C) and min 37.9°F (3.3°C). April's arrival coincides with a temperature rise, moving from March's wintry 42.4°F (5.8°C) to a moderate 56.1°F (13.4°C). Weather in April »Weather in May
May, the last month of the spring in Granby, is a pleasant month, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 68.5°F (20.3°C). The arrival of May brings a temperature shift, with the average high-temperature escalating from a moderate 56.1°F (13.4°C) in April to an agreeable 68.5°F (20.3°C). Weather in May »Weather in June
June, the first month of the summer in Granby, is a moderately hot month, with temperature in the range of an average low of 55°F (12.8°C) and an average high of 75.9°F (24.4°C). The transition from May to June brings a subtle temperature rise, with average high-temperatures increasing from an agreeable 68.5°F (20.3°C) to a moderately hot 75.9°F (24.4°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Granby, Connecticut, with an average temperature varying between 61.3°F (16.3°C) and 82.8°F (28.2°C). July is the warmest month, exhibiting average temperatures of 82.8°F (28.2°C) at the peak and 61.3°F (16.3°C) at the base. For most parts of July, the heat index is appraised at a hot 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Granby, is another warm month, with an average temperature ranging between min 59.7°F (15.4°C) and max 80.2°F (26.8°C). Granby, Connecticut, starts August with an average high-temperature of a still warm 80.2°F (26.8°C), hinting at a minimal fluctuation from July. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Granby, Connecticut, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 53.8°F (12.1°C). With the onset of September, Granby's climate undergoes a slight change as the average high-temperature moves from a warm 80.2°F (26.8°C) in August to an agreeable 73°F (22.8°C). Weather in September »Weather in October
October, the same as September, in Granby, Connecticut, is another mild autumn month, with an average temperature varying between 44.6°F (7°C) and 59.9°F (15.5°C). Transition into October marks a drop in the average high-temperature, moving from a pleasant 73°F (22.8°C) in September to a refreshing 59.9°F (15.5°C). Weather in October »Weather in November
November, the last month of the autumn in Granby, is also a frosty month, with an average temperature fluctuating between 34°F (1.1°C) and 47.7°F (8.7°C). The start of November comes with a reduction in the average high-temperature, receding from a moderate 59.9°F (15.5°C) in October to a chilly 47.7°F (8.7°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Granby, Connecticut, with an average temperature fluctuating between 37°F (2.8°C) and 25.9°F (-3.4°C). With December's onset, the average high-temperature recedes from November's chilly 47.7°F (8.7°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
January, marked by an average high-temperature of 31.5°F (-0.3°C) and a low-temperature of 18.9°F (-7.3°C), is the coldest month.
January is the month with the least rainfall. Rain falls for 6.3 days and accumulates 1.14" (29mm) of precipitation.
Throughout the year, in Granby, there are 130.2 rainfall days, and 19.25" (489mm) of precipitation is accumulated.
Months with snowfall in Granby, Connecticut, are January through May, November and December.
Throughout the year, there are 24.5 snowfall days, and 7.68" (195mm) 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 Granby, Connecticut, is February, with an average relative humidity of 81%.
February is the month with the most snowfall in Granby. Snow falls for 7 days and accumulates 2.48" (63mm) of snow.
With an average of 4.6h of sunshine, February has the least sunshine of the year in Granby.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Granby, 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 Granby, Connecticut, is April, with an average relative humidity of 71%.
In Granby, Connecticut, snow does not fall in June through October.
June has the longest days of the year in Granby, Connecticut, with an average of 15h and 12min of daylight.
The months with the highest UV index in Granby, Connecticut, are June through August, with an average maximum UV index of 6.
The warmest temperatures occur during July, when averages reach a peak of 82.8°F (28.2°C) and a low of 61.3°F (16.3°C).
The month with the most rainfall is July, when the rain falls for 13.7 days and typically aggregates up to 2.01" (51mm) of precipitation.
July and August, with an average of 10.4h of sunshine, are months with the most sunshine in Granby, Connecticut.
December has the shortest days of the year in Granby, Connecticut, with an average of 9h and 12min of daylight.
Average temperature
Granby, CT
The warmest month (with the highest average high temperature) is July (82.8°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 (18.9°F).
Average pressure
Granby, 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:
29.97"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.92"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:
30.08"Hg - Average pressure in December:
30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Granby, CT
- Average wind speed in January:
7.8mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.9mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.6mph
- Average wind speed in July:
5.1mph - Average wind speed in August:
5mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.5mph - Average wind speed in November:
7mph - 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 (5mph).
Average humidity
Granby, CT
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall
Granby, CT
- Average rainfall in January:
1.14" - Average rainfall in February:
1.22" - Average rainfall in March:
1.34" - Average rainfall in April:
1.65" - Average rainfall in May:
1.77" - Average rainfall in June:
1.85"
- Average rainfall in July:
2.01" - Average rainfall in August:
1.73" - Average rainfall in September:
1.26" - Average rainfall in October:
1.97" - Average rainfall in November:
1.73" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is July (2.01").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days
Granby, CT
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
7.6 days - Average rainfall days in March:
10.7 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
13.1 days
- Average rainfall days in July:
13.7 days - Average rainfall days in August:
12.7 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
9 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (6.3 days).
Average snowfall
Granby, CT
- Average snowfall in January:
1.38" - Average snowfall in February:
2.48" - Average snowfall in March:
1.3" - Average snowfall in April:
0.28" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.48").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Granby, CT
- Average snowfall days in January:
5.8 days - Average snowfall days in February:
7 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
0.8 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 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
4.1 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight / Average sunshine
Granby, CT
- Average daylight in January:
9h and 30min - 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 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - 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 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
5h and 12min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Granby, CT
- Average sunshine days in January:
19.9 days - Average sunshine days in February:
16 days - Average sunshine days in March:
15.5 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
14.9 days - Average sunshine days in June:
14.4 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
16.8 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
19 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (14.1 days).
Average UV index
Granby, 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
Granby, CT
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Granby, CT
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
