Your favorites:
What is Glenhaven, CA, Weather Like in October?
During the month of October, Glenhaven, CA,
has an average daytime high temperature of 76°F and an average overnight low temperature dropping to 44°F.
Around 0.91 inches of precipitation is received during the month,
with about 20.89 inches falling in a typical year.
As you might expect, snow is not common in the month of October.
Annually, Glenhaven receives around 0.40 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 19, 2025)
Actual High
Average High
Actual Low
Average Low
Actual data from: MID_PG097
Glenhaven, CA Daily Weather Averages for October
Recorded at Clearlake 4 Se
(usc00041806),
11.9 miles
SE of
Glenhaven, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 48 F | 81 F | 64 F | 0.01" | 19.99" | 0.00" | 0.40" | 2.7 F | 2 F |
| 10/2 | 47 F | 81 F | 64 F | 0.02" | 20.00" | 0.00" | 0.40" | 2.9 F | 1.9 F |
| 10/3 | 47 F | 80 F | 64 F | 0.03" | 20.01" | 0.00" | 0.40" | 3.1 F | 1.8 F |
| 10/4 | 47 F | 80 F | 63 F | 0.04" | 20.02" | 0.00" | 0.40" | 3.4 F | 1.7 F |
| 10/5 | 46 F | 80 F | 63 F | 0.05" | 20.03" | 0.00" | 0.40" | 3.6 F | 1.6 F |
| 10/6 | 46 F | 79 F | 63 F | 0.06" | 20.04" | 0.00" | 0.40" | 3.8 F | 1.5 F |
| 10/7 | 46 F | 79 F | 62 F | 0.08" | 20.06" | 0.00" | 0.40" | 4 F | 1.4 F |
| 10/8 | 46 F | 79 F | 62 F | 0.09" | 20.07" | 0.00" | 0.40" | 4.2 F | 1.3 F |
| 10/9 | 45 F | 78 F | 62 F | 0.11" | 20.09" | 0.00" | 0.40" | 4.4 F | 1.2 F |
| 10/10 | 45 F | 78 F | 61 F | 0.12" | 20.10" | 0.00" | 0.40" | 4.6 F | 1 F |
| 10/11 | 45 F | 77 F | 61 F | 0.14" | 20.12" | 0.00" | 0.40" | 4.8 F | 0.9 F |
| 10/12 | 45 F | 77 F | 61 F | 0.16" | 20.14" | 0.00" | 0.40" | 5.1 F | 0.8 F |
| 10/13 | 44 F | 77 F | 60 F | 0.18" | 20.16" | 0.00" | 0.40" | 5.3 F | 0.7 F |
| 10/14 | 44 F | 76 F | 60 F | 0.20" | 20.18" | 0.00" | 0.40" | 5.5 F | 0.6 F |
| 10/15 | 44 F | 76 F | 60 F | 0.22" | 20.20" | 0.00" | 0.40" | 5.8 F | 0.5 F |
| 10/16 | 43 F | 76 F | 59 F | 0.25" | 20.23" | 0.00" | 0.40" | 6.1 F | 0.4 F |
| 10/17 | 43 F | 75 F | 59 F | 0.27" | 20.25" | 0.00" | 0.40" | 6.4 F | 0.4 F |
| 10/18 | 43 F | 75 F | 59 F | 0.30" | 20.28" | 0.00" | 0.40" | 6.7 F | 0.3 F |
| 10/19 | 42 F | 74 F | 58 F | 0.33" | 20.31" | 0.00" | 0.40" | 6.9 F | 0.3 F |
| 10/20 | 42 F | 74 F | 58 F | 0.36" | 20.34" | 0.00" | 0.40" | 7.3 F | 0.2 F |
| 10/21 | 42 F | 74 F | 58 F | 0.39" | 20.37" | 0.00" | 0.40" | 7.6 F | 0.2 F |
| 10/22 | 41 F | 73 F | 57 F | 0.42" | 20.40" | 0.00" | 0.40" | 7.9 F | 0.1 F |
| 10/23 | 41 F | 73 F | 57 F | 0.45" | 20.43" | 0.00" | 0.40" | 8.2 F | 0.1 F |
| 10/24 | 41 F | 72 F | 57 F | 0.49" | 20.47" | 0.00" | 0.40" | 8.5 F | 0.1 F |
| 10/25 | 41 F | 72 F | 56 F | 0.54" | 20.52" | 0.00" | 0.40" | 8.9 F | 0.1 F |
| 10/26 | 40 F | 72 F | 56 F | 0.59" | 20.57" | 0.00" | 0.40" | 9.2 F | 0.1 F |
| 10/27 | 40 F | 71 F | 56 F | 0.65" | 20.63" | 0.00" | 0.40" | 9.6 F | 0.1 F |
| 10/28 | 40 F | 71 F | 55 F | 0.72" | 20.70" | 0.00" | 0.40" | 9.9 F | 0.1 F |
| 10/29 | 39 F | 70 F | 55 F | 0.78" | 20.76" | 0.00" | 0.40" | 10.2 F | 0.1 F |
| 10/30 | 39 F | 70 F | 55 F | 0.84" | 20.82" | 0.00" | 0.40" | 10.6 F | 0.1 F |
| 10/31 | 39 F | 70 F | 54 F | 0.91" | 20.89" | 0.00" | 0.40" | 10.9 F | 0.1 F |
Weather data provided by Xweather
