Clearlake weather in January: Clearlake, California: normal highs, lows, rain and records for January
Clearlake in January has a normal high of 55°F and a normal low of 33°F, a daily mean of 44°F, rising from 54°F on the 1st to 56°F by the 31st. Measurable precipitation falls on 14 days in a normal January, 6.19 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 13°C and low of 0°C, 157 mm of precipitation and 1 cm of snow in January.
- NOAA stationClearlake (4 mi SE)
- Station IDUSC00041806
- Location38.92°N 122.57°W
- Elevation1,349 ft (411 m)
- From the center4 miles
- Population16,636
- Jan 55° 33°
- Feb 58° 34°
- Mar 62° 35°
- Apr 66° 39°
- May 73° 45°
- Jun 83° 52°
- Jul 91° 56°
- Aug 91° 54°
- Sep 85° 50°
- Oct 75° 43°
- Nov 63° 36°
- Dec 55° 33°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Clearlake in January?
The normal high is 55°F and the normal low 33°F, for a daily mean of 43.7°F. January is 0.0°F warmer than December and 2.0°F cooler than February. January is the 11th warmest month of the year in Clearlake and the wettest, and the snowiest. Across the month the normal high rises 2°F, from 54°F on January 1 to 56°F on January 31. From one year to the next January's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 42°F and 46°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 54°F | 32°F | 43% | 30% |
| January 8 | 54°F | 32°F | 43% | 30% |
| January 15 | 55°F | 33°F | 43% | 30% |
| January 22 | 55°F | 33°F | 43% | 29% |
| January 31 | 56°F | 33°F | 42% | 28% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 31, coldest night January 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 2 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 3 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 4 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 5 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 6 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 7 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 8 | 54°F | 32°F | 43% | 30% | 9 h 30 min |
| January 9 | 54°F | 32°F | 43% | 30% | 9 h 40 min |
| January 10 | 54°F | 32°F | 43% | 30% | 9 h 40 min |
| January 11 | 54°F | 32°F | 43% | 30% | 9 h 40 min |
| January 12 | 54°F | 32°F | 43% | 30% | 9 h 40 min |
| January 13 | 54°F | 32°F | 43% | 30% | 9 h 40 min |
| January 14 | 55°F | 33°F | 43% | 30% | 9 h 40 min |
| January 15 | 55°F | 33°F | 43% | 30% | 9 h 40 min |
| January 16 | 55°F | 33°F | 43% | 29% | 9 h 40 min |
| January 17 | 55°F | 33°F | 43% | 29% | 9 h 50 min |
| January 18 | 55°F | 33°F | 43% | 29% | 9 h 50 min |
| January 19 | 55°F | 33°F | 43% | 29% | 9 h 50 min |
| January 20 | 55°F | 33°F | 43% | 29% | 9 h 50 min |
| January 21 | 55°F | 33°F | 43% | 29% | 9 h 50 min |
| January 22 | 55°F | 33°F | 43% | 29% | 9 h 50 min |
| January 23 | 56°F | 33°F | 43% | 29% | 10 h |
| January 24 | 56°F | 33°F | 43% | 29% | 10 h |
| January 25 | 56°F | 33°F | 43% | 29% | 10 h |
| January 26 | 56°F | 33°F | 43% | 29% | 10 h |
| January 27 | 56°F | 33°F | 43% | 29% | 10 h |
| January 28 | 56°F | 33°F | 43% | 29% | 10 h |
| January 29 | 56°F | 33°F | 42% | 29% | 10 h 10 min |
| January 30 | 56°F | 33°F | 42% | 28% | 10 h 10 min |
| January 31 | 56°F | 33°F | 42% | 28% | 10 h 10 min |
- Normal high
- 55°FJanuary average
- Normal low
- 33°FJanuary average
- Precipitation
- 6.19 inmonth total
- Days with precipitation
- 140.01 inch or more
- Snowfall
- 0.2 inmonth total
- Nights at 32°F or colder
- 18
- Daylight
- 9 h 30 min to 10 h 10 minJanuary 1 to January 31
- Days at 70°F or more
- 2
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00041806; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Clearlake in January?
On a given January day the chance of 0.01 inch or more is 43% on average, highest around January 7 (43%). In all, 6.19 in falls on 14 days of a normal January, 2 of them with an inch or more.
In a normal January in Clearlake, 18 nights fall to freezing and snowfall averages 0.2 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00041806.
What are the records for January in Clearlake?
The warmest January temperature on this station's record (since 1954) is 76°F, on January 29, 1989; the coldest is 8°F, on January 5, 1974. The wettest January brought 25.96 in (1995); the snowiest, 24.5 inches (1974).
The January mean against the 1991-2020 normal of 43.7°F: 2025 46.8°F (+3.1), 2026 48.9°F (+5.2). 2 of 2 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2025 | 46.8°F | +3.1°F | 0.94 in |
| 2026 | 48.9°F | +5.2°F | 6.25 in |
Source: records: ACIS, station USC00041806; recent months: ACIS, station USC00041806. Records and recent months use complete months only.
How does January in Clearlake compare across California?
Across the 219 places PlainClimate covers in California, January normal highs run from 37°F in Tahoma to 72°F in Brawley; Clearlake's is 55°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.