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
The transition from December to January sees an average high-temperature of a still refreshing 61°F (16.1°C), indicating a minor variance from the prior month. San Jacinto's nights in January experience an average temperature drop to an icy 42.4°F (5.8°C).Humidity
In San Jacinto, the average relative humidity in January is 51%.Rainfall
In San Jacinto, during January, the rain falls for 5.3 days and regularly aggregates up to 0.75" (19mm) of precipitation. In San Jacinto, during the entire year, the rain falls for 54 days and collects up to 6.61" (168mm) of precipitation.Snowfall
In San Jacinto, snow does not fall in January through November.Daylight
In January, the average length of the day is 10h and 13min.On the first day of January, sunrise is at 6:52 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 5:17 pm PST.
Sunshine
In January, the average sunshine is 6.8h.UV index
In San Jacinto, the average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 4 translates into these guidelines:
Put precautions into practice - Guidance to elude sunburn is provided. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January in San Jacinto?
When it does not snow?
Does it snow in January?
How many hours of daylight does San Jacinto have in January?
When are sunrise and sunset in January?
How many hours of sunshine does San Jacinto have in January?
How high is the UV index in January?
Average temperature in January
San Jacinto, CA
- Average high temperature in January: 61°F
The warmest month (with the highest average high temperature) is August (90.5°F).
The month with the lowest average high temperature is December (58.6°F).
- Average low temperature in January: 42.4°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure in January
San Jacinto, CA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in January
San Jacinto, CA
- Average wind speed in January: 5.6mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).
Average humidity in January
San Jacinto, CA
- Average humidity in January: 51%
The months with the highest relative humidity are February, March and May (56%).
The month with the lowest relative humidity is August (41%).
Average rainfall in January
San Jacinto, CA
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
San Jacinto, CA
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.6 days).
Average snowfall in January
San Jacinto, CA
- Average snowfall in January: 0"
The month with the highest snowfall is December (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in January
San Jacinto, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
San Jacinto, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 42min).
Average sunshine days in January
San Jacinto, CA
- Average sunshine days in January: 25.1 days
The month with the most sunshine days is October (27.4 days).
The month with the least sunshine days is February (20.9 days).
Average UV index in January
San Jacinto, CA
- Average UV index in January: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in January
San Jacinto, CA
- Average cloud cover in January: 21
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in January
San Jacinto, CA
- 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).
San Jacinto, California, USA
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