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
The onset of January notes an average high-temperature of a comfortable 62.2°F (16.8°C), subtly shifted from December's 59.9°F (15.5°C). Grand Terrace sees an average low-temperature of 44.6°F (7°C) during January.Humidity
In Grand Terrace, the average relative humidity in January is 48%.Rainfall
In Grand Terrace, in January, it is raining for 5.8 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, there are 46.6 rainfall days, and 6.18" (157mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall in Grand Terrace.Daylight
In Grand Terrace, the average length of the day in January is 10h and 11min.On the first day of January, sunrise is at 6:54 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 5:18 pm PST.
Sunshine
The average sunshine in January is 7h.UV index
In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In January, an average UV index of 4 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the average humidity in January?
How much does it rain in Grand Terrace in January?
When it does not snow?
Does it snow in January?
How many hours of daylight does Grand Terrace have in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the UV index intensity in January?
Average temperature in January
Grand Terrace, CA
- Average high temperature in January: 62.2°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).
- Average low temperature in January: 44.6°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in January
Grand Terrace, 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
Grand Terrace, CA
- Average wind speed in January: 5.3mph
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
Grand Terrace, CA
- Average humidity in January: 48%
The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).
Average rainfall in January
Grand Terrace, CA
- Average rainfall in January: 0.91"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Grand Terrace, CA
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in January
Grand Terrace, 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
Grand Terrace, 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 month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in January
Grand Terrace, CA
- Average sunshine days in January: 24.2 days
The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).
Average UV index in January
Grand Terrace, CA
- Average UV index in January: 4
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Grand Terrace, CA
- Average cloud cover in January: 19
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Grand Terrace, 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).
Grand Terrace, California, USA
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