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
January ushers in an average high-temperature of a still mild 60.4°F (15.8°C), aligning closely with the preceding month. Foster Park records an average low of 46.9°F (8.3°C) throughout the nights in January.Humidity
In Foster Park, the average relative humidity in January is 57%.Rainfall
January is the month with the most rainfall. Rain falls for 5.5 days and accumulates 1.5" (38mm) of precipitation.Daylight
In Foster Park, the average length of the day in January is 10h and 10min.On the first day of the month, sunrise is at 7:03 am and sunset at 4:57 pm. On the last day of January, sunrise is at 6:55 am and sunset at 5:25 pm PST.
Sunshine
In January, the average sunshine is 6.8h.UV index
In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 4 during January translates into the following guidance:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. 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 are January temperatures?
What is the average humidity in January?
What is the rainiest month?
How much does it rain in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the UV index intensity in January?
Average temperature in January
Foster Park, CA
- Average high temperature in January: 60.4°F
The warmest month (with the highest average high temperature) is August (79°F).
The month with the lowest average high temperature is December (58.8°F).
- Average low temperature in January: 46.9°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in January
Foster Park, 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
Foster Park, CA
- Average wind speed in January: 5.9mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in January
Foster Park, CA
- Average humidity in January: 57%
The month with the highest relative humidity is March (63%).
The months with the lowest relative humidity are October and November (52%).
Average rainfall in January
Foster Park, CA
- Average rainfall in January: 1.5"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in January
Foster Park, CA
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is August (1.3 days).
Average daylight in January /
Average sunshine in January
Foster Park, 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 month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in January
Foster Park, CA
- Average sunshine days in January: 24.7 days
The month with the most sunshine days is October (25.7 days).
The month with the least sunshine days is February (20.8 days).
Average UV index in January
Foster Park, CA
- Average UV index in January: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in January
Foster Park, 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
Foster Park, 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).
Foster Park, California, USA
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