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
Fountain Valley, California, experiences an average high-temperature of a still enjoyable 64.6°F (18.1°C) in January, subtly different from December's 62.6°F (17°C). Fountain Valley experiences an average low-temperature reading of 52.9°F (11.6°C) throughout January.Humidity
The average relative humidity in January in Fountain Valley is 59%.Rainfall
In Fountain Valley, in January, during 5.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. Throughout the year, there are 59.1 rainfall days, and 8.86" (225mm) of precipitation is accumulated.Daylight
The average length of the day in January is 10h and 13min.On the first day of January, sunrise is at 6:56 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 5:21 pm PST.
Sunshine
In Fountain Valley, the average sunshine in January is 6.8h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In January, the maximum UV index of 4 translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
What is the usual temperature for Fountain Valley in January?
What is the average humidity in January in Fountain Valley?
How much does it rain in Fountain Valley in January?
What is the average length of the day in January in Fountain Valley?
What time are sunrise and sunset in January in Fountain Valley?
How long on average sun shines in January in Fountain Valley?
What is the month with the lowest UV index in Fountain Valley?
What is the UV index intensity in January in Fountain Valley?
Average temperature in January
Fountain Valley, CA
- Average high temperature in January: 64.6°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (62.6°F).
- Average low temperature in January: 52.9°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).
Average pressure in January
Fountain Valley, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in January
Fountain Valley, CA
- Average wind speed in January: 5.4mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are September and October (5.2mph).
Average humidity in January
Fountain Valley, CA
- Average humidity in January: 59%
The month with the highest relative humidity is June (72%).
The month with the lowest relative humidity is November (56%).
Average rainfall in January
Fountain Valley, CA
- Average rainfall in January: 1.54"
The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Fountain Valley, CA
- Average rainfall days in January: 5.5 days
The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is August (2.1 days).
Average daylight in January /
Average sunshine in January
Fountain 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: 10h and 0min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in January
Fountain Valley, CA
- Average sunshine days in January: 23.9 days
The month with the most sunshine days is August (26.8 days).
The month with the least sunshine days is February (20 days).
Average UV index in January
Fountain Valley, CA
- Average UV index in January: 4
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in January
Fountain Valley, CA
- Average cloud cover in January: 21
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in January
Fountain 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).
Fountain Valley, California, USA
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