Average weather for Folsom in January
It's cool to moderate in January in Folsom with an average temperature of 15°C. Temperatures this month range from a low of 12°C to a high of 17°C. At night, you can expect temperatures between 3°C and 7°C.
Start of January
The month of January starts in Folsom with cool temps, averaging around 14°C during the day and nights around 6°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid January
By mid-January, daytime temps rise to around 15°C, with nights around 5°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of January
By the end of January, the average daytime temperature in Folsom is around 16°C, while nighttime temps are about 5°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
In January, there is an average of 56 mm of precipitation, spread over 8 days. The wind speed is around 3 Bft, mostly coming from the South.
Folsom in January |
New York | ||
---|---|---|---|
![]() |
15°C | 5°C | |
![]() |
17°C | 11°C | |
![]() |
12°C | -5°C | |
![]() |
56 mm | 97 mm | |
![]() |
8 days | 12 days |
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is January a good time to visit Folsom?
Looking for sun and warm weather? January isn’t a good month to be in Folsom. The temperatures are too low for a warm stay this month.
Temperature records
With 24°C in 2014, Folsom reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 7°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of -3°C to a highest value of 14°C.
Check out the climate of Folsom for all months and discover the best travel time
Daily Temperature in January in Folsom
This chart shows the average daily high and low temperatures in January for Folsom, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in January in Folsom
The chart below shows the average daily precipitation in January for Folsom, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for January, you can expect about 8 days of precipitation in Folsom.
Daily UV index in January in Folsom
This chart shows the average daily UV index in January in Folsom, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Folsom over the years
This chart shows the average temperature in January in Folsom, measured in degrees Celsius, over the past few years.
Total precipitation in January in Folsom over the years
This chart shows the average precipitation in January in Folsom, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in January for Folsom
Click on any day in January to get detailed info about the usual weather on that day in Folsom. Check out the historical temperatures and precipitation over the past 10 years on this day.































Weather experiences in January in Folsom
Have you been to Folsom in January?
Share your weather experience in January in Folsom.
Average weather in Folsom by month
Click on a month below to see detailed weather info for Folsom. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.