January weather forecastFoster Park, CA

January

Weather in January

January, the same as December, in Foster Park, California, is another mild winter month, with an average temperature ranging between min 46.9°F (8.3°C) and max 60.4°F (15.8°C).

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.

Updated: Jun 6, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In January, in Foster Park, the average high-temperature is 60.4°F (15.8°C), and the average low-temperature is 46.9°F (8.3°C).

In Foster Park, the average relative humidity in January is 57%.

January is the month with the most rainfall in Foster Park. Rain falls for 5.5 days and accumulates 1.5" (38mm) of precipitation.

In January, the rain falls for 5.5 days. Throughout January, 1.5" (38mm) of precipitation is accumulated.

The average day length in January is 10h and 10min.

On the first day of January, sunrise is at 7:03 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 5:25 pm PST.

The average sunshine duration in January is 6.8h.

The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

58.8°F

60.4°F

59.4°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.5mph

6.4mph

6.7mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

24.1

24.7

20.8

Average UV index

Average cloud cover

Average visibility

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 12min

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 48min

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).