Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The month of January sees the lowest average temperatures, reaching 33.1°F (0.6°C) at the peak and 21°F (-6.1°C) at the low.Humidity
In January, the average relative humidity in Holliston is 77%.Rainfall
In Holliston, during January, the rain falls for 7.5 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Holliston, during the entire year, the rain falls for 157.5 days and collects up to 29.53" (750mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Holliston, during January, snow falls for 7.1 days and regularly aggregates up to 3.35" (85mm) of snow. In Holliston, during the entire year, snow falls for 28.8 days and aggregates up to 17.32" (440mm) of snow.Daylight
The average length of the day in January in Holliston is 9h and 31min.On the first day of the month, sunrise is at 7:14 am and sunset at 4:23 pm. On the last day of January, in Holliston, sunrise is at 7:00 am and sunset at 4:58 pm EST.
Sunshine
In Holliston, Massachusetts, the average sunshine in January is 5.1h.UV index
The months with the lowest UV index in Holliston are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 2 in January translates into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What month is the coldest in Holliston?
How cold is January in Holliston?
What is the average humidity in January in Holliston?
How much does it rain in Holliston in January?
How much does it snow in Holliston in January?
How many hours of daylight does Holliston have in January?
When are sunrise and sunset in January in Holliston?
How many hours of sunshine does Holliston have in January?
When is the lowest UV index in Holliston?
What is the UV index intensity in January in Holliston?
Average temperature in January
Holliston, MA
- Average high temperature in January: 33.1°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in January: 21°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in January
Holliston, MA
- Average pressure in January: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in January
Holliston, MA
- Average wind speed in January: 8.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in January
Holliston, MA
- Average humidity in January: 77%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in January
Holliston, MA
- Average rainfall in January: 2.24"
The wettest month (with the highest rainfall) is April (2.87").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in January
Holliston, MA
- Average rainfall days in January: 7.5 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in January
Holliston, MA
- Average snowfall in January: 3.35"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Holliston, MA
- Average snowfall days in January: 7.1 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Holliston, MA
- Average daylight in January: 9h and 3min
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 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Holliston, MA
- Average sunshine days in January: 17.5 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is June (11 days).
Average UV index in January
Holliston, MA
- 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
Holliston, MA
- Average cloud cover in January: 44
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in January
Holliston, MA
- Average visibility in January: 6mi
The months with the highest visibility are January, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are February, August and September (5mi).
Holliston, Massachusetts, USA
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