Tracy, CA weather in January
Tracy is cool in January, with frequent rain: highs average 57°F and nights drop to about 39°F. There are about 13 days with rain. It is one of the coolest months in Tracy.
- Normal high
- 57°F
- Normal low
- 39°F
- Wet days
- 13
- 2.5 in total
- Muggy days
- 0
- dew point 65°F+
How January changes from start to finish
| January 1 | January 31 | |
|---|---|---|
| Normal high | 56°F | 59°F |
| Normal low | 38°F | 40°F |
| Chance of a wet day | 41% | 39% |
| Sunrise / sunset | 7:21 am / 4:57 pm | 7:10 am / 5:27 pm |
| Daylight | 9.6 h | 10.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical January day
- 6 am42°Fdew point 39°F
- 9 am44°Fdew point 41°F
- Noon52°Fdew point 43°F
- 3 pm55°Fdew point 43°F
- 6 pm50°Fdew point 43°F
- 9 pm46°Fdew point 42°F
NOAA hourly normals (local standard time) from Stockton Metro Airport (15 mi away); average wind 6 mph; clear or few clouds in 50% of daytime hours, mostly cloudy or overcast in 46%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F3 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow13 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below7 of 31
Average days per January, counted from daily records for each year 1991-2020.
Rain in January
Normal precipitation is 2.5 in; a dry January brings about 1.0 in and a wet one about 4.4 in (25th and 75th percentiles). About 1 day brings half an inch or more. Snow is very rare.
How January varies from year to year
- Warmest January, 1991-20202014: average high 65°F
- Coolest January1992: average high 49°F
- Wettest January2017: 6.6 in
- Driest January2015: 0.02 in
- Highest reading74°F (January 24, 2014)
- Lowest reading20°F (January 15, 2007)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
January compared with December and February
| December | January | February | |
|---|---|---|---|
| Normal high | 57°F | 57°F | 63°F |
| Normal low | 38°F | 39°F | 41°F |
| Wet days | 11 | 13 | 10 |
| Comfortable days | 2 | 3 | 9 |
| Daylight | 9.6 h | 9.9 h | 10.8 h |
Highs change by 0°F from December and +6°F into February.
Nearby alternatives in January
- Warmer: Salinas, CA74 mi · high 62°F · 9 wet days
- Drier: Stockton, CA17 mi · high 57°F · 10 wet days
- Cooler: Yosemite Valley, CA101 mi · high 48°F · 9 wet days
How Tracy ranks in January
- Normal high138th warmest of 378 cities; 47th of 60 in California
- Wet days327th driest of 378
- Comfortable days169th most of 339
What to pack for Tracy in January
- A warm jacket – lows near 39°F, highs near 57°F
- A rain jacket or umbrella – rain on about 13 days
Frost in January
The last spring frost typically comes around Jan 19; in 1 year in 10 it comes after Feb 17. All frost dates for Tracy.
Heating and cooling
January has 525 heating degree days and 0 cooling degree days (base 65°F), 14% of the year's total heating and cooling demand.
Questions
How cold is Tracy in January?
The normal high is 57°F and the normal low is 39°F. From 1991 to 2020 the coldest January reading was 20°F (most recently on January 15, 2007).
Does it rain a lot in Tracy in January?
About 13 days in January have at least 0.01 in of precipitation, and the normal total is 2.5 in. The wettest January in 1991-2020 was in 2017 (6.6 in); the driest was in 2015 (0.02 in).
Does it snow in Tracy in January?
Snow is very rare: the 1991-2020 normal for January rounds to 0.0 in.
Is January a good time to visit Tracy?
January ranks 9th of 12 months on our comfort score for Tracy (46 out of 100). It has about 3 comfortable days. The best month is April.
Where the numbers come from
- Temperature, humidity and wind by hour and cloud cover: Stockton Metro Airport (USW00023237), 15 mi NE of the city center, 26 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall, snow depth and frost dates: Tracy Pumping Plt (USC00049001), 9.5 mi WNW of the city center, 61 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Stockton Metropolitan Airport (724920-23237), 15 mi NE of the city center, 27 ft . Hourly observations, 1991-2020.