January weather forecast and climate
Brookline, NH

January, the same as December, in Brookline, New Hampshire, is another subzero cold winter month, with average temperature varying between 18.5°F (-7.5°C) and 30.9°F (-0.6°C).

Temperature

January is the coldest month, with an average high-temperature of 30.9°F (-0.6°C) and an average low-temperature of 18.5°F (-7.5°C).

Humidity

In Brookline, the average relative humidity is 80%.

Rainfall

In Brookline, during 7.8 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, in Brookline, there are 147.4 rainfall days, and 28.46" (723mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Brookline, New Hampshire, snow falls for 9.1 days, with typically accumulated 4.96" (126mm) of snow. Throughout the year, in Brookline, there are 35.7 snowfall days, and 25.35" (644mm) of snow is accumulated.

Daylight

In January, the average length of the day in Brookline, New Hampshire, is 9.5h.

Sunshine

The average sunshine in January is 5.1h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 2 transform 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. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Brookline?

With an average high-temperature of 30.9°F (-0.6°C) and an average low-temperature of 18.5°F (-7.5°C), January is the coldest month in Brookline, New Hampshire.

What is the temperature in January in Brookline?

In Brookline, in January, the average high-temperature is 30.9°F (-0.6°C), and the average low-temperature is 18.5°F (-7.5°C).

What is the average humidity in January in Brookline?

In Brookline, the average relative humidity in January is 80%.

How many days does it rain in January in Brookline?

In January, in Brookline, New Hampshire, the rain falls for 7.8 days. Throughout January, 2.2" (56mm) of precipitation is accumulated.

How many days does it snow in January in Brookline?

In January, in Brookline, it is snowing for 9.1 days. Throughout January, 4.96" (126mm) of snow is accumulated.

What is the average length of the day in January in Brookline?

The average length of the day in January in Brookline, New Hampshire, is 9.5h.

How many hours of sunshine does Brookline have in January?

In Brookline, New Hampshire, the average sunshine in January is 5.1h.

When is the lowest UV index in Brookline?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Brookline.

What is the UV index reading in January in Brookline?

In Brookline, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - Brookline, NH
  • Average high temperature in January: -0.6°C

The warmest month (with the highest average high temperature) is July (27.7°C).
The month with the lowest average high temperature is January (-0.6°C).

  • Average low temperature in January: -7.5°C

The month with the highest average low temperature is July (16.5°C).
The coldest month (with the lowest average low temperature) is January (-7.5°C).

Average pressure in January - Brookline, NH
  • Average pressure in January: 1016.3mbar

The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013.2mbar).

Average wind speed in January - Brookline, NH
  • Average wind speed in January: 13.3km/h

The windiest month (with the highest average wind speed) is January (13.3km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).

Average humidity in January - Brookline, NH
  • Average humidity in January: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).

Average rainfall in January - Brookline, NH
  • Average rainfall in January: 56mm

The wettest months (with the highest rainfall) are October and December (72mm).
The driest month (with the least rainfall) is September (38mm).

Average rainfall days in January - Brookline, NH
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in January - Brookline, NH
  • Average snowfall in January: 126mm

The month with the highest snowfall is February (162mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in January - Brookline, NH
  • Average snowfall days in January: 9.1 days

The month with the highest number of snowfall days is January (9.1 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Brookline, NH
  • Average daylight in January: 9.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in January: 5.1h

The month with the most sunshine is August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in January - Brookline, NH
  • Average sunshine days in January: 17.4 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (13.2 days).

Average UV index in January - Brookline, NH
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January - Brookline, NH
  • Average cloud cover in January: 45

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in January - Brookline, NH
  • Average visibility in January: 8km

Months with the highest visibility are April, November and December (9km).
Months with the lowest visibility are January, February, March, May, June, July, August, September and October (8km).