Clearlake weather in March: Clearlake, California: normal highs, lows, rain and records for March
Clearlake in March has a normal high of 62°F and a normal low of 35°F, a daily mean of 49°F, rising from 59°F on the 1st to 64°F by the 31st. Measurable precipitation falls on 10 days in a normal March, 3.99 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 16°C and low of 2°C, 101 mm of precipitation and 0 cm of snow in March.
- 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 March?
The normal high is 62°F and the normal low 35°F, for a daily mean of 48.5°F. March is 2.8°F warmer than February and 4.3°F cooler than April. March is the 9th warmest month of the year in Clearlake and the 4th wettest. Across the month the normal high rises 5°F, from 59°F on March 1 to 64°F on March 31. From one year to the next March's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Marchs in three average between 45°F and 52°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| March 1 | 59°F | 34°F | 42% | 28% |
| March 8 | 60°F | 35°F | 38% | 25% |
| March 15 | 61°F | 35°F | 35% | 22% |
| March 22 | 63°F | 36°F | 32% | 20% |
| March 31 | 64°F | 37°F | 29% | 17% |
Every day of March: normal high, low and chance of precipitation (warmest afternoon March 31, coldest night March 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| March 1 | 59°F | 34°F | 42% | 28% | 11 h 20 min |
| March 2 | 60°F | 34°F | 42% | 28% | 11 h 20 min |
| March 3 | 60°F | 34°F | 41% | 27% | 11 h 20 min |
| March 4 | 60°F | 34°F | 41% | 27% | 11 h 20 min |
| March 5 | 60°F | 35°F | 40% | 27% | 11 h 30 min |
| March 6 | 60°F | 35°F | 40% | 26% | 11 h 30 min |
| March 7 | 60°F | 35°F | 39% | 26% | 11 h 30 min |
| March 8 | 60°F | 35°F | 38% | 25% | 11 h 30 min |
| March 9 | 61°F | 35°F | 38% | 25% | 11 h 40 min |
| March 10 | 61°F | 35°F | 37% | 24% | 11 h 40 min |
| March 11 | 61°F | 35°F | 37% | 24% | 11 h 40 min |
| March 12 | 61°F | 35°F | 36% | 24% | 11 h 50 min |
| March 13 | 61°F | 35°F | 36% | 23% | 11 h 50 min |
| March 14 | 61°F | 35°F | 35% | 23% | 11 h 50 min |
| March 15 | 61°F | 35°F | 35% | 22% | 11 h 50 min |
| March 16 | 62°F | 35°F | 34% | 22% | 12 h |
| March 17 | 62°F | 35°F | 34% | 22% | 12 h |
| March 18 | 62°F | 36°F | 33% | 21% | 12 h |
| March 19 | 62°F | 36°F | 33% | 21% | 12 h |
| March 20 | 62°F | 36°F | 32% | 21% | 12 h 10 min |
| March 21 | 62°F | 36°F | 32% | 20% | 12 h 10 min |
| March 22 | 63°F | 36°F | 32% | 20% | 12 h 10 min |
| March 23 | 63°F | 36°F | 31% | 20% | 12 h 10 min |
| March 24 | 63°F | 36°F | 31% | 19% | 12 h 20 min |
| March 25 | 63°F | 36°F | 31% | 19% | 12 h 20 min |
| March 26 | 63°F | 36°F | 31% | 18% | 12 h 20 min |
| March 27 | 63°F | 36°F | 30% | 18% | 12 h 20 min |
| March 28 | 64°F | 37°F | 30% | 18% | 12 h 30 min |
| March 29 | 64°F | 37°F | 30% | 18% | 12 h 30 min |
| March 30 | 64°F | 37°F | 30% | 17% | 12 h 30 min |
| March 31 | 64°F | 37°F | 29% | 17% | 12 h 30 min |
- Normal high
- 62°FMarch average
- Normal low
- 35°FMarch average
- Precipitation
- 3.99 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 0.1 inmonth total
- Nights at 32°F or colder
- 9
- Daylight
- 11 h 20 min to 12 h 30 minMarch 1 to March 31
- Days at 70°F or more
- 8
- Days at 80°F or more
- 1
- Sunshine
- 78%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 March?
On a given March day the chance of 0.01 inch or more is 35% on average, highest around March 1 (42%). In all, 3.99 in falls on 10 days of a normal March, 1 of them with an inch or more.
In a normal March in Clearlake, 9 nights fall to freezing and snowfall averages 0.1 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00041806.
What are the records for March in Clearlake?
The warmest March temperature on this station's record (since 1954) is 93°F, on March 21, 2026; the coldest is 17°F, on March 3, 1966. The wettest March brought 15.71 in (1995); the snowiest, 6.0 inches (1976).
The March mean against the 1991-2020 normal of 48.5°F: 2025 48.7°F (+0.2), 2026 59.8°F (+11.3). 2 of 2 ran warmer than normal.
| March | Mean | Against normal | Precip. |
|---|---|---|---|
| 2025 | 48.7°F | +0.2°F | 3.77 in |
| 2026 | 59.8°F | +11.3°F | 0.02 in |
Source: records: ACIS, station USC00041806; recent months: ACIS, station USC00041806. Records and recent months use complete months only.
How does March in Clearlake compare across California?
Across the 219 places PlainClimate covers in California, March normal highs run from 43°F in Tahoma to 81°F in Brawley; Clearlake's is 62°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.