Clearlake weather in October: Clearlake, California: normal highs, lows, rain and records for October
Clearlake in October has a normal high of 75°F and a normal low of 43°F, a daily mean of 59°F, falling from 81°F on the 1st to 70°F by the 31st. Measurable precipitation falls on 4 days in a normal October, 0.91 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 6°C, 23 mm of precipitation in October.
- 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 October?
The normal high is 75°F and the normal low 43°F, for a daily mean of 59.3°F. October is 8.6°F cooler than September and 9.8°F warmer than November. October is the 5th warmest month of the year in Clearlake and the 8th wettest. Across the month the normal high falls 11°F, from 81°F on October 1 to 70°F on October 31. From one year to the next October's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Octobers in three average between 57°F and 62°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 21%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| October 1 | 81°F | 48°F | 6% | 3% |
| October 8 | 79°F | 46°F | 8% | 5% |
| October 15 | 76°F | 44°F | 11% | 6% |
| October 22 | 73°F | 41°F | 15% | 8% |
| October 31 | 70°F | 39°F | 21% | 12% |
Every day of October: normal high, low and chance of precipitation (warmest afternoon October 1, coldest night October 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| October 1 | 81°F | 48°F | 6% | 3% | 11 h 50 min |
| October 2 | 81°F | 47°F | 6% | 3% | 11 h 50 min |
| October 3 | 80°F | 47°F | 6% | 4% | 11 h 50 min |
| October 4 | 80°F | 47°F | 7% | 4% | 11 h 40 min |
| October 5 | 80°F | 46°F | 7% | 4% | 11 h 40 min |
| October 6 | 79°F | 46°F | 8% | 4% | 11 h 40 min |
| October 7 | 79°F | 46°F | 8% | 4% | 11 h 30 min |
| October 8 | 79°F | 46°F | 8% | 5% | 11 h 30 min |
| October 9 | 78°F | 45°F | 9% | 5% | 11 h 30 min |
| October 10 | 78°F | 45°F | 9% | 5% | 11 h 30 min |
| October 11 | 77°F | 45°F | 10% | 5% | 11 h 30 min |
| October 12 | 77°F | 45°F | 10% | 6% | 11 h 20 min |
| October 13 | 77°F | 44°F | 10% | 6% | 11 h 20 min |
| October 14 | 76°F | 44°F | 11% | 6% | 11 h 20 min |
| October 15 | 76°F | 44°F | 11% | 6% | 11 h 20 min |
| October 16 | 76°F | 43°F | 12% | 7% | 11 h 10 min |
| October 17 | 75°F | 43°F | 12% | 7% | 11 h 10 min |
| October 18 | 75°F | 43°F | 13% | 7% | 11 h 10 min |
| October 19 | 74°F | 42°F | 13% | 7% | 11 h 10 min |
| October 20 | 74°F | 42°F | 14% | 8% | 11 h |
| October 21 | 74°F | 42°F | 15% | 8% | 11 h |
| October 22 | 73°F | 41°F | 15% | 8% | 11 h |
| October 23 | 73°F | 41°F | 16% | 9% | 11 h |
| October 24 | 72°F | 41°F | 16% | 9% | 10 h 50 min |
| October 25 | 72°F | 41°F | 17% | 9% | 10 h 50 min |
| October 26 | 72°F | 40°F | 18% | 10% | 10 h 50 min |
| October 27 | 71°F | 40°F | 18% | 10% | 10 h 50 min |
| October 28 | 71°F | 40°F | 19% | 11% | 10 h 40 min |
| October 29 | 70°F | 39°F | 20% | 11% | 10 h 40 min |
| October 30 | 70°F | 39°F | 20% | 11% | 10 h 40 min |
| October 31 | 70°F | 39°F | 21% | 12% | 10 h 40 min |
- Normal high
- 75°FOctober average
- Normal low
- 43°FOctober average
- Precipitation
- 0.91 inmonth total
- Days with precipitation
- 40.01 inch or more
- Days at 90°F or more
- 2
- Nights at 32°F or colder
- 1
- Daylight
- 11 h 50 min to 10 h 40 minOctober 1 to October 31
- Days at 70°F or more
- 23
- Days at 80°F or more
- 12
- Sunshine
- 88%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 October?
On a given October day the chance of 0.01 inch or more is 12% on average, highest around October 31 (21%). In all, 0.91 in falls on 4 days of a normal October.
In a normal October in Clearlake, 2 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00041806.
What are the records for October in Clearlake?
The warmest October temperature on this station's record (since 1954) is 102°F, on October 3, 2024; the coldest is 24°F, on October 31, 1971. The wettest October brought 7.40 in (1962).
The October mean against the 1991-2020 normal of 59.3°F: 2024 63.8°F (+4.5), 2025 58.5°F (−0.8). 1 of 2 ran warmer than normal.
| October | Mean | Against normal | Precip. |
|---|---|---|---|
| 2024 | 63.8°F | +4.5°F | 0.11 in |
| 2025 | 58.5°F | −0.8°F | – |
Source: records: ACIS, station USC00041806; recent months: ACIS, station USC00041806. Records and recent months use complete months only.
How does October in Clearlake compare across California?
Across the 219 places PlainClimate covers in California, October normal highs run from 58°F in Tahoma to 93°F in Brawley; Clearlake's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Clearlake in September85°F by day, 50°F at night
- Clearlake in November63°F by day, 36°F at night
- Clearlake through the yearEvery month, frost dates, records and recent years
- California in OctoberThe statewide normal and the warmest and coolest places
- Brawley: California's warmest Octobernormal high 93°F