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 onset records a minor alteration in the average high-temperature to a still refreshing 63.1°F (17.3°C) from December's 60.8°F (16°C). Throughout the month of January, Sierra Heights sees a steady low-temperature average of 45.3°F (7.4°C).Humidity
The average relative humidity in January in Sierra Heights is 48%.Rainfall
In Sierra Heights, during January, the rain falls for 5.6 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Sierra Heights, California, during the entire year, the rain falls for 48.1 days and collects up to 6.89" (175mm) of precipitation.Snowfall
In Sierra Heights, California, snow does not fall in January, March through December.Daylight
The average length of the day in January is 10h and 11min.On the first day of the month, sunrise is at 6:55 am and sunset at 4:50 pm. On the last day of January, in Sierra Heights, sunrise is at 6:47 am and sunset at 5:18 pm PST.
Sunshine
In Sierra Heights, the average sunshine in January is 7h.UV index
The average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 4 in January translates into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What are January temperatures in Sierra Heights?
What is the average humidity in January in Sierra Heights?
How much does it rain in Sierra Heights in January?
When it does not snow in Sierra Heights?
Does it snow in Sierra Heights in January?
How many hours of daylight does Sierra Heights have in January?
When is the sunrise / sunset in January in Sierra Heights?
How many hours of sunshine does Sierra Heights have in January?
What is the UV index intensity in January in Sierra Heights?
Average temperature in January
Sierra Heights, CA
- Average high temperature in January: 63.1°F
The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is December (60.8°F).
- Average low temperature in January: 45.3°F
The month with the highest average low temperature is August (67.3°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).
Average pressure in January
Sierra Heights, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Sierra Heights, CA
- Average wind speed in January: 5.5mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in January
Sierra Heights, CA
- Average humidity in January: 48%
The months with the highest relative humidity are February, March and May (52%).
The month with the lowest relative humidity is August (39%).
Average rainfall in January
Sierra Heights, CA
- Average rainfall in January: 1.02"
The wettest month (with the highest rainfall) is February (1.57").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Sierra Heights, CA
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in January
Sierra Heights, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Sierra Heights, 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: 7h and 0min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in January
Sierra Heights, CA
- Average sunshine days in January: 24 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.1 days).
Average UV index in January
Sierra Heights, CA
- Average UV index in January: 4
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Sierra Heights, CA
- Average cloud cover in January: 19
The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in January
Sierra Heights, 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).
Sierra Heights, California, USA
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