Clearlake weather in April: Clearlake, California: normal highs, lows, rain and records for April
Clearlake in April has a normal high of 66°F and a normal low of 39°F, a daily mean of 53°F, rising from 64°F on the 1st to 69°F by the 30th. Measurable precipitation falls on 8 days in a normal April, 1.99 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 4°C, 51 mm of precipitation in April.
- 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 April?
The normal high is 66°F and the normal low 39°F, for a daily mean of 52.8°F. April is 4.3°F warmer than March and 6.0°F cooler than May. April is the 7th warmest month of the year in Clearlake and the 6th wettest. Across the month the normal high rises 5°F, from 64°F on April 1 to 69°F on April 30. From one year to the next April's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 51°F and 55°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 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 64°F | 37°F | 29% | 17% |
| April 8 | 65°F | 38°F | 28% | 16% |
| April 15 | 66°F | 39°F | 27% | 14% |
| April 22 | 67°F | 40°F | 25% | 13% |
| April 30 | 69°F | 42°F | 23% | 11% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 64°F | 37°F | 29% | 17% | 12 h 40 min |
| April 2 | 64°F | 37°F | 29% | 17% | 12 h 40 min |
| April 3 | 65°F | 37°F | 29% | 16% | 12 h 40 min |
| April 4 | 65°F | 38°F | 29% | 16% | 12 h 40 min |
| April 5 | 65°F | 38°F | 29% | 16% | 12 h 50 min |
| April 6 | 65°F | 38°F | 29% | 16% | 12 h 50 min |
| April 7 | 65°F | 38°F | 29% | 16% | 12 h 50 min |
| April 8 | 65°F | 38°F | 28% | 16% | 12 h 50 min |
| April 9 | 65°F | 38°F | 28% | 15% | 13 h |
| April 10 | 66°F | 38°F | 28% | 15% | 13 h |
| April 11 | 66°F | 39°F | 28% | 15% | 13 h |
| April 12 | 66°F | 39°F | 28% | 15% | 13 h |
| April 13 | 66°F | 39°F | 28% | 15% | 13 h 10 min |
| April 14 | 66°F | 39°F | 28% | 14% | 13 h 10 min |
| April 15 | 66°F | 39°F | 27% | 14% | 13 h 10 min |
| April 16 | 67°F | 39°F | 27% | 14% | 13 h 10 min |
| April 17 | 67°F | 40°F | 27% | 14% | 13 h 20 min |
| April 18 | 67°F | 40°F | 27% | 13% | 13 h 20 min |
| April 19 | 67°F | 40°F | 26% | 13% | 13 h 20 min |
| April 20 | 67°F | 40°F | 26% | 13% | 13 h 20 min |
| April 21 | 67°F | 40°F | 25% | 13% | 13 h 30 min |
| April 22 | 67°F | 40°F | 25% | 13% | 13 h 30 min |
| April 23 | 68°F | 41°F | 25% | 12% | 13 h 30 min |
| April 24 | 68°F | 41°F | 25% | 12% | 13 h 30 min |
| April 25 | 68°F | 41°F | 24% | 12% | 13 h 30 min |
| April 26 | 68°F | 41°F | 24% | 12% | 13 h 40 min |
| April 27 | 68°F | 41°F | 24% | 12% | 13 h 40 min |
| April 28 | 68°F | 41°F | 23% | 12% | 13 h 40 min |
| April 29 | 69°F | 42°F | 23% | 11% | 13 h 40 min |
| April 30 | 69°F | 42°F | 23% | 11% | 13 h 50 min |
- Normal high
- 66°FApril average
- Normal low
- 39°FApril average
- Precipitation
- 1.99 inmonth total
- Days with precipitation
- 80.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 12 h 40 min to 13 h 50 minApril 1 to April 30
- Days at 70°F or more
- 12
- Days at 80°F or more
- 4
- Sunshine
- 84%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 in Clearlake in April?
On a given April day the chance of 0.01 inch or more is 27% on average, highest around April 1 (29%). In all, 1.99 in falls on 8 days of a normal April.
In a normal April in Clearlake, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00041806.
What are the records for April in Clearlake?
The warmest April temperature on this station's record (since 1954) is 94°F, on April 30, 1981; the coldest is 23°F, on April 24, 1964. The wettest April brought 8.57 in (2006).
The April mean against the 1991-2020 normal of 52.8°F: 2026 54.8°F (+2.0). 1 of 1 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2026 | 54.8°F | +2.0°F | 4.49 in |
Source: records: ACIS, station USC00041806; recent months: ACIS, station USC00041806. Records and recent months use complete months only.
How does April in Clearlake compare across California?
Across the 219 places PlainClimate covers in California, April normal highs run from 49°F in Tahoma to 87°F in Brawley; Clearlake's is 66°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.