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 brings the lowest temperatures, with an average high of 30.6°F (-0.8°C) and an average low of 9.3°F (-12.6°C).Humidity
The most humid month is January, with an average relative humidity of 82%.Rainfall
In January, the rain falls for 3.2 days. Throughout January, 0.47" (12mm) of precipitation is accumulated. In San Luis, during the entire year, the rain falls for 72.2 days and collects up to 8.82" (224mm) of precipitation.Snowfall
Months with snowfall in San Luis are January through June, September through December. In January, it is snowing for 9.3 days. Throughout January, 3.7" (94mm) of snow is accumulated. Throughout the year, there are 57.6 snowfall days, and 28.58" (726mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 57min.On the first day of January, sunrise is at 7:15 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:24 pm MST.
Sunshine
With an average of 6.5h of sunshine, January has the least sunshine of the year.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in San Luis. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, an average UV index of 2 transforms into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What is the coldest time of year in San Luis?
How cold is January in San Luis?
What is the most humid month in San Luis?
What is the average humidity in January in San Luis?
How many days does it rain in January in San Luis?
How many days does it snow in January in San Luis?
What is the average length of the day in January in San Luis?
What time are sunrise and sunset in January in San Luis?
What is the month with the least sunshine in San Luis?
How many hours of sunshine does San Luis have in January?
What are the months with the lowest UV index in San Luis?
What is the UV index reading in January in San Luis?
Average temperature in January
San Luis, CO
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in January: 9.3°F
The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in January
San Luis, CO
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.89"Hg).
Average wind speed in January
San Luis, CO
- Average wind speed in January: 5.6mph
The windiest months (with the highest average wind speed) are April and May (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in January
San Luis, CO
- Average humidity in January: 82%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (38%).
Average rainfall in January
San Luis, CO
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is November (0.43").
Average rainfall days in January
San Luis, CO
- Average rainfall days in January: 3.2 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is November (1.3 days).
Average snowfall in January
San Luis, CO
- Average snowfall in January: 3.7"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are July and August (0").
Average snowfall days in January
San Luis, CO
- Average snowfall days in January: 9.3 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
San Luis, CO
- Average daylight in January: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January: 6h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 30min).
Average sunshine days in January
San Luis, CO
- Average sunshine days in January: 21.4 days
The month with the most sunshine days is October (24.1 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in January
San Luis, 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, March, October, November and December (UV index 2).
Average cloud cover in January
San Luis, CO
- Average cloud cover in January: 31
The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and October (Cloud cover 14).
Average visibility in January
San Luis, CO
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
San Luis, Colorado, USA
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