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What is Napa, CA, Weather Like in October?
During the month of October, Napa, CA,
has an average daytime high temperature of 79°F and an average overnight low temperature dropping to 50°F.
Around 1.34 inches of precipitation is received during the month,
with about 18.36 inches falling in a typical year.
Snow is not common in Napa, CA.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 24, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 73.5 F
(-6.0 vs avg)
Average Low: 51.7 F
(+1.7 vs avg)
Daytime temperatures were significantly below average.
Actual data from: MID_530PG
Napa, CA Daily Weather Averages for October
Recorded at Napa State Hospital
(usc00046074),
1.8 miles
SE of
Napa, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 52 F | 83 F | 67 F | 0.02" | 17.04" | 0.00" | 0.00" | 1.1 F | 3.2 F |
| 10/2 | 52 F | 82 F | 67 F | 0.04" | 17.06" | 0.00" | 0.00" | 1.2 F | 3.1 F |
| 10/3 | 51 F | 82 F | 67 F | 0.06" | 17.08" | 0.00" | 0.00" | 1.2 F | 3 F |
| 10/4 | 51 F | 82 F | 67 F | 0.08" | 17.10" | 0.00" | 0.00" | 1.3 F | 2.9 F |
| 10/5 | 51 F | 82 F | 66 F | 0.10" | 17.12" | 0.00" | 0.00" | 1.4 F | 2.8 F |
| 10/6 | 51 F | 81 F | 66 F | 0.12" | 17.14" | 0.00" | 0.00" | 1.5 F | 2.6 F |
| 10/7 | 51 F | 81 F | 66 F | 0.14" | 17.16" | 0.00" | 0.00" | 1.6 F | 2.5 F |
| 10/8 | 51 F | 81 F | 66 F | 0.16" | 17.18" | 0.00" | 0.00" | 1.7 F | 2.4 F |
| 10/9 | 51 F | 81 F | 66 F | 0.19" | 17.21" | 0.00" | 0.00" | 1.8 F | 2.3 F |
| 10/10 | 50 F | 80 F | 65 F | 0.21" | 17.23" | 0.00" | 0.00" | 1.9 F | 2.2 F |
| 10/11 | 50 F | 80 F | 65 F | 0.24" | 17.26" | 0.00" | 0.00" | 2 F | 2 F |
| 10/12 | 50 F | 80 F | 65 F | 0.28" | 17.30" | 0.00" | 0.00" | 2 F | 1.9 F |
| 10/13 | 50 F | 79 F | 65 F | 0.31" | 17.33" | 0.00" | 0.00" | 2.2 F | 1.8 F |
| 10/14 | 50 F | 79 F | 64 F | 0.35" | 17.37" | 0.00" | 0.00" | 2.3 F | 1.7 F |
| 10/15 | 50 F | 79 F | 64 F | 0.39" | 17.41" | 0.00" | 0.00" | 2.4 F | 1.6 F |
| 10/16 | 49 F | 78 F | 64 F | 0.44" | 17.46" | 0.00" | 0.00" | 2.6 F | 1.5 F |
| 10/17 | 49 F | 78 F | 64 F | 0.48" | 17.50" | 0.00" | 0.00" | 2.7 F | 1.4 F |
| 10/18 | 49 F | 78 F | 63 F | 0.53" | 17.55" | 0.00" | 0.00" | 2.9 F | 1.3 F |
| 10/19 | 49 F | 77 F | 63 F | 0.58" | 17.60" | 0.00" | 0.00" | 3.1 F | 1.2 F |
| 10/20 | 49 F | 77 F | 63 F | 0.63" | 17.65" | 0.00" | 0.00" | 3.2 F | 1.1 F |
| 10/21 | 49 F | 77 F | 63 F | 0.68" | 17.70" | 0.00" | 0.00" | 3.4 F | 1 F |
| 10/22 | 48 F | 76 F | 62 F | 0.74" | 17.76" | 0.00" | 0.00" | 3.6 F | 0.9 F |
| 10/23 | 48 F | 76 F | 62 F | 0.79" | 17.81" | 0.00" | 0.00" | 3.8 F | 0.8 F |
| 10/24 | 48 F | 76 F | 62 F | 0.85" | 17.87" | 0.00" | 0.00" | 4 F | 0.7 F |
| 10/25 | 48 F | 75 F | 61 F | 0.92" | 17.94" | 0.00" | 0.00" | 4.2 F | 0.6 F |
| 10/26 | 48 F | 75 F | 61 F | 0.98" | 18.00" | 0.00" | 0.00" | 4.4 F | 0.6 F |
| 10/27 | 47 F | 74 F | 61 F | 1.05" | 18.07" | 0.00" | 0.00" | 4.7 F | 0.5 F |
| 10/28 | 47 F | 74 F | 61 F | 1.12" | 18.14" | 0.00" | 0.00" | 4.9 F | 0.5 F |
| 10/29 | 47 F | 74 F | 60 F | 1.19" | 18.21" | 0.00" | 0.00" | 5.2 F | 0.4 F |
| 10/30 | 47 F | 73 F | 60 F | 1.27" | 18.29" | 0.00" | 0.00" | 5.5 F | 0.4 F |
| 10/31 | 47 F | 73 F | 60 F | 1.34" | 18.36" | 0.00" | 0.00" | 5.8 F | 0.4 F |
