January weather forecastGranby, CT
January
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).Temperature
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).Humidity
The average relative humidity in January is 79%.Rainfall
The month with the least rainfall is January, when the rain falls for 6.3 days and typically collects 1.14" (29mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Granby, in January, during 5.8 snowfall days, 1.38" (35mm) of snow is typically accumulated. Throughout the year, there are 24.5 snowfall days, and 7.68" (195mm) of snow is accumulated.Daylight
In Granby, the average length of the day in January is 9h and 32min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:30 pm. On the last day of January, in Granby, Connecticut, sunrise is at 7:04 am and sunset at 5:04 pm EST.
Sunshine
The average sunshine in January in Granby is 5.2h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Granby, Connecticut. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during January leads to these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Granby, CT
- Average high temperature in January: 31.5°F
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).
- Average low temperature in January: 18.9°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 in January
Granby, CT
- Average pressure in January: 30.03"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 in January
Granby, CT
- Average wind speed in January: 7.8mph
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 in January
Granby, CT
- Average humidity in January: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall in January
Granby, CT
- Average rainfall in January: 1.14"
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 in January
Granby, CT
- Average rainfall days in January: 6.3 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 in January
Granby, CT
- Average snowfall in January: 1.38"
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 in January
Granby, CT
- Average snowfall days in January: 5.8 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 in January /
Average sunshine in January
Granby, CT
- Average daylight in January: 9h and 30min
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
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 in January
Granby, CT
- Average sunshine days in January: 19.9 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 in January
Granby, CT
- Average UV index in January: 2
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 in January
Granby, CT
- Average cloud cover in January: 44
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 in January
Granby, CT
- Average visibility in January: 6mi
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).
