January weather forecast
Grover, CO

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Weather in January

January, like December, in Grover, Colorado, is another cold winter month, with an average temperature ranging between max 40.3°F (4.6°C) and min 22.1°F (-5.5°C).

Temperature

January commences with an average high-temperature of a still wintry 40.3°F (4.6°C), showing little deviation from December's 38.3°F (3.5°C). An average low-temperature of 22.1°F (-5.5°C) is observed in Grover, Colorado, during the January nights.

Humidity

In Grover, the average relative humidity in January is 63%.

Rainfall

January and December are months with the least rain when the rain falls for 2.9 days and typically aggregates up to 0.31" (8mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Grover, during January, snow falls for 5.8 days and regularly aggregates up to 2.01" (51mm) of snow. Throughout the year, there are 39.6 snowfall days, and 21.26" (540mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 38min.
On the first day of January, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:12 pm MST.

Sunshine

In January, the average sunshine is 6.8h.

UV index

The months with the lowest UV index in Grover are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, the maximum UV index of 2 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during January?

In Grover, 40.3°F (4.6°C) is the average high-temperature and 22.1°F (-5.5°C) is the average low-temperature during January.

What is the average humidity in January?

In Grover, the average relative humidity in January is 63%.

What is the driest month?

January and December are months with the least rain when the rain falls for 2.9 days and typically aggregates up to 0.31" (8mm) of rain.

How much does it rain in January?

In Grover, in January, during 2.9 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

How much does it snow in January?

In January, it is snowing for 5.8 days. Throughout January, 2.01" (51mm) of snow is accumulated.

How many hours of daylight does Grover have in January?

In Grover, the average day length in January is 9h and 38min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:12 pm MST.

How long on average sun shines in January?

In January, the average sunshine duration is 6.8h.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in January?

The average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Grover, CO

Average temperature in January - Grover, CO
  • Average high temperature in January: 40.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in January: 22.1°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

Average pressure in January
Grover, CO

Average pressure in January - Grover, CO
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in January
Grover, CO

Average wind speed in January - Grover, CO
  • Average wind speed in January: 6.8mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in January
Grover, CO

Average humidity in January - Grover, CO
  • Average humidity in January: 63%

The month with the highest relative humidity is December (64%).
The months with the lowest relative humidity are August and September (44%).

Average rainfall in January
Grover, CO

Average rainfall in January - Grover, CO
  • Average rainfall in January: 0.31"

The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and December (0.31").

Average rainfall days in January
Grover, CO

Average rainfall days in January - Grover, CO
  • Average rainfall days in January: 2.9 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (2.9 days).

Average snowfall in January
Grover, CO

Average snowfall in January - Grover, CO
  • Average snowfall in January: 2.01"

The month with the highest snowfall is April (3.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Grover, CO

Average snowfall days in January - Grover, CO
  • Average snowfall days in January: 5.8 days

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in January /
Average sunshine in January
Grover, CO

Average daylight in January / Average sunshine in January - Grover, CO
  • Average daylight in January: 9h and 4min

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 18min).

  • Average sunshine in January: 6h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in January
Grover, CO

Average sunshine days in January - Grover, CO
  • Average sunshine days in January: 23.4 days

The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in January
Grover, CO

Average UV index in January - Grover, CO
  • 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, November and December (UV index 2).

Average cloud cover in January
Grover, CO

Average cloud cover in January - Grover, CO
  • Average cloud cover in January: 25

The months with the most cloud cover are February and April (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 17).

Average visibility in January
Grover, CO

Average visibility in January - Grover, CO
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Grover, Colorado, USA

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