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 snowfall 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's beginning signals an average high-temperature of a mild 56.7°F (13.7°C), barely different from December's 55°F (12.8°C). January sees the temperature falling to a mean low of 41.2°F (5.1°C).Humidity
The average relative humidity in January is 74%.Rainfall
In January, the rain falls for 8.5 days. Throughout January, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 63.8 rainfall days, and 12.6" (320mm) of precipitation is accumulated.Snowfall
January through November are months without snowfall.Daylight
The average length of the day in January in Herald is 9h and 52min.On the first day of January, sunrise is at 7:21 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:25 pm PST.
Sunshine
In Herald, the average sunshine in January is 6.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 3 during January morphs into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in January?
What is the average humidity in January?
How much does it rain in January?
When it does not snow?
Does it snow in Herald in January?
How many hours of daylight does Herald have in January?
When are sunrise and sunset in January?
How many hours of sunshine does Herald have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Herald, CA
- Average high temperature in January: 56.7°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in January: 41.2°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure in January
Herald, CA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Herald, CA
- Average wind speed in January: 4.8mph
The windiest months (with the highest average wind speed) are February and June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).
Average humidity in January
Herald, CA
- Average humidity in January: 74%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (45%).
Average rainfall in January
Herald, CA
- Average rainfall in January: 2.01"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Herald, CA
- Average rainfall days in January: 8.5 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days in January
Herald, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Herald, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in January
Herald, CA
- Average sunshine days in January: 21.8 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in January
Herald, CA
- Average UV index in January: 3
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Herald, CA
- Average cloud cover in January: 32
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Herald, 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).
Herald, California, USA
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