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
As Jamestown transitions from December to January, the average high-temperatures adjust to a still cold 36.7°F (2.6°C), nearly the same as the previous 35.2°F (1.8°C). In the month of January, the temperature generally rests at an average low of 19°F (-7.2°C).Humidity
In January, the average relative humidity in Jamestown, Colorado, is 68%.Rainfall
January is the month with the least rainfall in Jamestown. Rain falls for 4.3 days and accumulates 0.39" (10mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Jamestown, during January, snow falls for 6.3 days and regularly aggregates up to 2.87" (73mm) of snow. Throughout the year, in Jamestown, there are 44.8 snowfall days, and 37.01" (940mm) of snow is accumulated.Daylight
In January, the average length of the day in Jamestown is 9h and 43min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:46 pm. On the last day of January, in Jamestown, sunrise is at 7:11 am and sunset at 5:18 pm MST.
Sunshine
The average sunshine in January in Jamestown is 6.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 2 during January morphs into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
How cold is it in Jamestown in January?
What is the average humidity in January in Jamestown?
What is the driest month in Jamestown?
How many days does it rain in January in Jamestown?
How much does it snow in Jamestown in January?
How many hours of daylight does Jamestown have in January?
When is the sunrise / sunset in January in Jamestown?
How many hours of sunshine does Jamestown have in January?
What are the months with the lowest UV index in Jamestown?
What is the UV index reading in January in Jamestown?
Average temperature in January
Jamestown, CO
- Average high temperature in January: 36.7°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is December (35.2°F).
- Average low temperature in January: 19°F
The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is February (18°F).
Average pressure in January
Jamestown, CO
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.92"Hg).
Average wind speed in January
Jamestown, CO
- Average wind speed in January: 7.3mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest months (with the lowest average wind speed) are May, July, August and September (5.7mph).
Average humidity in January
Jamestown, CO
- Average humidity in January: 68%
The month with the highest relative humidity is February (70%).
The months with the lowest relative humidity are June, August and September (45%).
Average rainfall in January
Jamestown, CO
- Average rainfall in January: 0.39"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in January
Jamestown, CO
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (3.3 days).
Average snowfall in January
Jamestown, CO
- Average snowfall in January: 2.87"
The month with the highest snowfall is April (7.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Jamestown, CO
- Average snowfall days in January: 6.3 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Jamestown, CO
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in January
Jamestown, CO
- Average sunshine days in January: 22.2 days
The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in January
Jamestown, CO
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Jamestown, CO
- Average cloud cover in January: 22
The months with the most cloud cover are April and May (Cloud cover 28).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in January
Jamestown, 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).
Jamestown, Colorado, USA
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