Your favorites:
What is Santa Rosa Post Office, CA, Weather Like in October?
During the month of October, Santa Rosa Post Office, CA,
has an average daytime high temperature of 80°F and an average overnight low temperature dropping to 48°F.
Around 1.63 inches of precipitation is received during the month,
with about 21.81 inches falling in a typical year.
Snow is not common in Santa Rosa Post Office, CA.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 23, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 76.6 F
(-3.6 vs avg)
Average Low: 49.8 F
(+1.5 vs avg)
Daytime temperatures were significantly below average.
Actual data from: PWS_HUMBOLDTSTREET
Santa Rosa Post Office, CA Daily Weather Averages for October
Recorded at Santa Rosa
(usc00047965),
1.1 miles
N of
Santa Rosa Post Office, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 50 F | 82 F | 66 F | 0.02" | 20.20" | 0.00" | 0.00" | 1.6 F | 2.6 F |
| 10/2 | 50 F | 82 F | 66 F | 0.04" | 20.22" | 0.00" | 0.00" | 1.7 F | 2.5 F |
| 10/3 | 49 F | 82 F | 66 F | 0.07" | 20.25" | 0.00" | 0.00" | 1.7 F | 2.5 F |
| 10/4 | 49 F | 82 F | 66 F | 0.09" | 20.27" | 0.00" | 0.00" | 1.8 F | 2.4 F |
| 10/5 | 49 F | 82 F | 66 F | 0.11" | 20.29" | 0.00" | 0.00" | 1.8 F | 2.3 F |
| 10/6 | 49 F | 82 F | 65 F | 0.14" | 20.32" | 0.00" | 0.00" | 1.9 F | 2.2 F |
| 10/7 | 49 F | 81 F | 65 F | 0.17" | 20.35" | 0.00" | 0.00" | 2 F | 2.1 F |
| 10/8 | 49 F | 81 F | 65 F | 0.19" | 20.37" | 0.00" | 0.00" | 2 F | 2.1 F |
| 10/9 | 49 F | 81 F | 65 F | 0.22" | 20.40" | 0.00" | 0.00" | 2.1 F | 2 F |
| 10/10 | 49 F | 81 F | 65 F | 0.26" | 20.44" | 0.00" | 0.00" | 2.2 F | 1.9 F |
| 10/11 | 48 F | 81 F | 65 F | 0.30" | 20.48" | 0.00" | 0.00" | 2.3 F | 1.8 F |
| 10/12 | 48 F | 80 F | 64 F | 0.34" | 20.52" | 0.00" | 0.00" | 2.4 F | 1.7 F |
| 10/13 | 48 F | 80 F | 64 F | 0.38" | 20.56" | 0.00" | 0.00" | 2.5 F | 1.6 F |
| 10/14 | 48 F | 80 F | 64 F | 0.43" | 20.61" | 0.00" | 0.00" | 2.6 F | 1.5 F |
| 10/15 | 48 F | 80 F | 64 F | 0.48" | 20.66" | 0.00" | 0.00" | 2.7 F | 1.4 F |
| 10/16 | 48 F | 79 F | 64 F | 0.54" | 20.72" | 0.00" | 0.00" | 2.8 F | 1.4 F |
| 10/17 | 48 F | 79 F | 63 F | 0.59" | 20.77" | 0.00" | 0.00" | 3 F | 1.3 F |
| 10/18 | 47 F | 79 F | 63 F | 0.65" | 20.83" | 0.00" | 0.00" | 3.1 F | 1.2 F |
| 10/19 | 47 F | 78 F | 63 F | 0.71" | 20.89" | 0.00" | 0.00" | 3.3 F | 1.1 F |
| 10/20 | 47 F | 78 F | 63 F | 0.77" | 20.95" | 0.00" | 0.00" | 3.5 F | 1.1 F |
| 10/21 | 47 F | 78 F | 62 F | 0.84" | 21.02" | 0.00" | 0.00" | 3.6 F | 1 F |
| 10/22 | 47 F | 77 F | 62 F | 0.90" | 21.08" | 0.00" | 0.00" | 3.8 F | 0.9 F |
| 10/23 | 47 F | 77 F | 62 F | 0.97" | 21.15" | 0.00" | 0.00" | 4 F | 0.8 F |
| 10/24 | 46 F | 77 F | 62 F | 1.04" | 21.22" | 0.00" | 0.00" | 4.2 F | 0.8 F |
| 10/25 | 46 F | 76 F | 61 F | 1.12" | 21.30" | 0.00" | 0.00" | 4.4 F | 0.7 F |
| 10/26 | 46 F | 76 F | 61 F | 1.20" | 21.38" | 0.00" | 0.00" | 4.6 F | 0.6 F |
| 10/27 | 46 F | 76 F | 61 F | 1.29" | 21.47" | 0.00" | 0.00" | 4.8 F | 0.6 F |
| 10/28 | 46 F | 75 F | 61 F | 1.37" | 21.55" | 0.00" | 0.00" | 5.1 F | 0.5 F |
| 10/29 | 46 F | 75 F | 60 F | 1.46" | 21.64" | 0.00" | 0.00" | 5.3 F | 0.5 F |
| 10/30 | 45 F | 74 F | 60 F | 1.54" | 21.72" | 0.00" | 0.00" | 5.6 F | 0.4 F |
| 10/31 | 45 F | 74 F | 60 F | 1.63" | 21.81" | 0.00" | 0.00" | 5.9 F | 0.4 F |
