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 marks an average high-temperature of a still comfortable 65.1°F (18.4°C), hardly differing from December's 63.1°F (17.3°C). In the month of January, Lake Forest's average low-temperature falls to a cool 50°F (10°C).Humidity
In Lake Forest, California, the average relative humidity in January is 57%.Rainfall
In Lake Forest, in January, during 5.6 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 65.4 rainfall days, and 9.17" (233mm) of precipitation is accumulated.Daylight
In Lake Forest, the average length of the day in January is 10h and 13min.On the first day of the month, sunrise is at 6:55 am and sunset at 4:53 pm. On the last day of January, sunrise is at 6:47 am and sunset at 5:20 pm PST.
Sunshine
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 in Lake Forest. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during January leads to these advisories:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What is the temperature in January in Lake Forest?
What is the average humidity in January in Lake Forest?
How many days does it rain in January in Lake Forest?
How many hours of daylight does Lake Forest have in January?
When is the sunrise / sunset in January in Lake Forest?
How long on average sun shines in January in Lake Forest?
When is the lowest UV index in Lake Forest?
What is the UV index reading in January in Lake Forest?
Average temperature in January
Lake Forest, CA
- Average high temperature in January: 65.1°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in January: 50°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure in January
Lake Forest, 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 (29.88"Hg).
Average wind speed in January
Lake Forest, CA
- Average wind speed in January: 5mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).
Average humidity in January
Lake Forest, CA
- Average humidity in January: 57%
The months with the highest relative humidity are May and June (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall in January
Lake Forest, CA
- Average rainfall in January: 1.3"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Lake Forest, CA
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (2 days).
Average daylight in January /
Average sunshine in January
Lake Forest, 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
Lake Forest, CA
- Average sunshine days in January: 24.2 days
The months with the most sunshine days are January and October (24.2 days).
The month with the least sunshine days is May (19.3 days).
Average UV index in January
Lake Forest, CA
- Average UV index in January: 4
The months with the highest UV index are June, 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
Lake Forest, CA
- Average cloud cover in January: 22
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 6).
Average visibility in January
Lake Forest, 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).
Lake Forest, California, USA
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