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
January's onset in Longmont sees an average high-temperature of a still cold 40.1°F (4.5°C), exhibiting a slight fluctuation from the previous month. During January, Longmont witnesses a consistent average low-temperature of 21.2°F (-6°C).Humidity
The average relative humidity in January is 65%.Rainfall
January is the month with the least rainfall. Rain falls for 3.5 days and accumulates 0.35" (9mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Longmont, during January, snow falls for 5.8 days and regularly aggregates up to 2.64" (67mm) of snow. In Longmont, during the entire year, snow falls for 37.1 days and aggregates up to 26.73" (679mm) of snow.Daylight
In January, the average length of the day is 9h and 42min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:45 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:17 pm MST.
Sunshine
The average sunshine in January is 7.1h.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 value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Longmont in January?
What is the average humidity in January in Longmont?
What is the driest month in Longmont?
How many days does it rain in January in Longmont?
How much does it snow in Longmont in January?
What is the average length of the day in January in Longmont?
When are sunrise and sunset in January in Longmont?
How many hours of sunshine does Longmont have in January?
What is the month with the lowest UV index in Longmont?
How high is the UV index in January in Longmont?
Average temperature in January
Longmont, CO
- Average high temperature in January: 40.1°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (39°F).
- Average low temperature in January: 21.2°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is December (19.9°F).
Average pressure in January
Longmont, 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 and June (29.91"Hg).
Average wind speed in January
Longmont, CO
- Average wind speed in January: 6.2mph
The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.6mph).
Average humidity in January
Longmont, CO
- Average humidity in January: 65%
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is August (42%).
Average rainfall in January
Longmont, CO
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in January
Longmont, CO
- Average rainfall days in January: 3.5 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in January
Longmont, CO
- Average snowfall in January: 2.64"
The month with the highest snowfall is November (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Longmont, CO
- Average snowfall days in January: 5.8 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Longmont, 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: 7h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in January
Longmont, 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 July (9.3 days).
Average UV index in January
Longmont, CO
- Average UV index in January: 2
The months with the highest UV index are 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
Longmont, CO
- Average cloud cover in January: 21
The months with the most cloud cover are April and May (Cloud cover 26).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in January
Longmont, 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).
Longmont, Colorado, USA
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