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 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 onset of January brings with it an average high-temperature of an enjoyable 61.3°F (16.3°C), showing a negligible variation from the month before. During January, Simi Valley's temperature averages to a chilly 47.3°F (8.5°C) at night.Humidity
In January, the average relative humidity is 55%.Rainfall
In Simi Valley, in January, during 5.6 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Simi Valley, during the entire year, the rain falls for 53.7 days and collects up to 9.61" (244mm) of precipitation.Daylight
The average length of the day in January is 10h and 11min.On the first day of the month, sunrise is at 7:01 am and sunset at 4:56 pm. On the last day of January, sunrise is at 6:53 am and sunset at 5:23 pm PST.
Sunshine
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine in Simi Valley.UV index
In January, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 4 in January transforms into this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Simi Valley in January?
What is the average humidity in January?
How many days does it rain in January?
How many hours of daylight does Simi Valley have in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Simi Valley have in January?
What is the UV index reading in January?
Average temperature in January
Simi Valley, CA
- Average high temperature in January: 61.3°F
The warmest month (with the highest average high temperature) is August (82.2°F).
The month with the lowest average high temperature is December (60.1°F).
- Average low temperature in January: 47.3°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 (46.4°F).
Average pressure in January
Simi Valley, CA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in January
Simi Valley, CA
- Average wind speed in January: 6.4mph
The windiest month (with the highest average wind speed) is December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in January
Simi Valley, CA
- Average humidity in January: 55%
The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (50%).
Average rainfall in January
Simi Valley, CA
- Average rainfall in January: 1.89"
The wettest month (with the highest rainfall) is February (1.93").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Simi Valley, CA
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is March (8 days).
The months with the least rainy days are June and August (1.5 days).
Average daylight in January /
Average sunshine in January
Simi Valley, 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: 9h and 54min).
- 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 January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in January
Simi Valley, CA
- Average sunshine days in January: 23.9 days
The month with the most sunshine days is August (25.4 days).
The month with the least sunshine days is February (20.9 days).
Average UV index in January
Simi Valley, CA
- Average UV index in January: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Simi Valley, CA
- Average cloud cover in January: 21
The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Simi Valley, 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).
Simi Valley, California, USA
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