January weather forecastTracy, CA
January
Weather in January
January is a refreshing winter month in Tracy, California, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 55.8°F (13.2°C).Temperature
In January, Tracy experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 54.1°F (12.3°C) in December to a moderate 55.8°F (13.2°C). During January, the temperature tends to dip to an average of 40.1°F (4.5°C) at night.Humidity
With an average relative humidity of 74%, January is the most humid month.Rainfall
In January, the rain falls for 7.3 days. Throughout January, 0.79" (20mm) of precipitation is accumulated. In Tracy, California, during the entire year, the rain falls for 60.6 days and collects up to 5.71" (145mm) of precipitation.Snowfall
January through November are months without snowfall in Tracy.Daylight
In Tracy, the average length of the day in January is 9h and 55min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:57 pm. On the last day of January, sunrise is at 7:10 am and sunset at 5:27 pm PST.
Sunshine
The average sunshine in January in Tracy, California, is 6.1h.UV index
The months with the lowest UV index in Tracy are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 3 in January translates into the following instructions:
Exercise prevention - Warding off sunburn is urged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Tracy, CA
- Average high temperature in January: 55.8°F
The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in January: 40.1°F
The month with the highest average low temperature is August (58.6°F).
The coldest months (with the lowest average low temperature) are January and December (40.1°F).
Average pressure in January
Tracy, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Tracy, CA
- Average wind speed in January: 4.6mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in January
Tracy, CA
- Average humidity in January: 74%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is July (45%).
Average rainfall in January
Tracy, CA
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is March (1.06").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in January
Tracy, CA
- Average rainfall days in January: 7.3 days
The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (1.2 days).
Average snowfall days in January
Tracy, 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
Tracy, CA
- Average daylight in January: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 6h and 6min
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 48min).
Average sunshine days in January
Tracy, CA
- Average sunshine days in January: 22.6 days
The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is March (18.4 days).
Average UV index in January
Tracy, CA
- Average UV index in January: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Tracy, CA
- Average cloud cover in January: 34
The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in January
Tracy, 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).
