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What is Vacaville, CA, Weather Like in October?
During the month of October, Vacaville, CA,
has an average daytime high temperature of 80°F and an average overnight low temperature dropping to 49°F.
Around 1.08 inches of precipitation is received during the month,
with about 17.45 inches falling in a typical year.
Snow is not common in Vacaville, CA.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 21, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 75.2 F
(-7.1 vs avg)
Average Low: 52.2 F
(+1.6 vs avg)
Daytime temperatures were significantly below average.
Actual data from: KVCB
Vacaville, CA Daily Weather Averages for October
Recorded at Vacaville Nut Tree Ap
(usw00093241),
2.2 miles
NE of
Vacaville, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 53 F | 86 F | 70 F | 0.01" | 16.38" | N/A | N/A | 0.6 F | 5.2 F |
| 10/2 | 53 F | 86 F | 69 F | 0.03" | 16.40" | N/A | N/A | 0.7 F | 4.9 F |
| 10/3 | 53 F | 85 F | 69 F | 0.04" | 16.41" | N/A | N/A | 0.7 F | 4.7 F |
| 10/4 | 52 F | 85 F | 69 F | 0.06" | 16.43" | N/A | N/A | 0.8 F | 4.4 F |
| 10/5 | 52 F | 85 F | 68 F | 0.07" | 16.44" | N/A | N/A | 0.9 F | 4.2 F |
| 10/6 | 52 F | 84 F | 68 F | 0.09" | 16.46" | N/A | N/A | 1 F | 4 F |
| 10/7 | 52 F | 84 F | 68 F | 0.11" | 16.48" | N/A | N/A | 1.1 F | 3.8 F |
| 10/8 | 51 F | 83 F | 67 F | 0.13" | 16.50" | N/A | N/A | 1.2 F | 3.5 F |
| 10/9 | 51 F | 83 F | 67 F | 0.15" | 16.52" | N/A | N/A | 1.3 F | 3.3 F |
| 10/10 | 51 F | 83 F | 67 F | 0.17" | 16.54" | N/A | N/A | 1.5 F | 3.1 F |
| 10/11 | 50 F | 82 F | 66 F | 0.19" | 16.56" | N/A | N/A | 1.6 F | 2.9 F |
| 10/12 | 50 F | 82 F | 66 F | 0.22" | 16.59" | N/A | N/A | 1.7 F | 2.6 F |
| 10/13 | 50 F | 81 F | 66 F | 0.24" | 16.61" | N/A | N/A | 1.8 F | 2.4 F |
| 10/14 | 50 F | 81 F | 65 F | 0.27" | 16.64" | N/A | N/A | 2 F | 2.2 F |
| 10/15 | 49 F | 80 F | 65 F | 0.31" | 16.68" | N/A | N/A | 2.1 F | 2 F |
| 10/16 | 49 F | 80 F | 65 F | 0.34" | 16.71" | N/A | N/A | 2.3 F | 1.9 F |
| 10/17 | 49 F | 80 F | 64 F | 0.37" | 16.74" | N/A | N/A | 2.5 F | 1.7 F |
| 10/18 | 49 F | 79 F | 64 F | 0.41" | 16.78" | N/A | N/A | 2.7 F | 1.6 F |
| 10/19 | 48 F | 79 F | 64 F | 0.45" | 16.82" | N/A | N/A | 2.9 F | 1.4 F |
| 10/20 | 48 F | 78 F | 63 F | 0.49" | 16.86" | N/A | N/A | 3.1 F | 1.3 F |
| 10/21 | 48 F | 78 F | 63 F | 0.53" | 16.90" | N/A | N/A | 3.3 F | 1.1 F |
| 10/22 | 48 F | 77 F | 62 F | 0.57" | 16.94" | N/A | N/A | 3.5 F | 1 F |
| 10/23 | 47 F | 77 F | 62 F | 0.61" | 16.98" | N/A | N/A | 3.8 F | 0.8 F |
| 10/24 | 47 F | 77 F | 62 F | 0.66" | 17.03" | N/A | N/A | 4 F | 0.7 F |
| 10/25 | 47 F | 76 F | 61 F | 0.71" | 17.08" | N/A | N/A | 4.2 F | 0.6 F |
| 10/26 | 47 F | 76 F | 61 F | 0.77" | 17.14" | N/A | N/A | 4.5 F | 0.5 F |
| 10/27 | 46 F | 75 F | 61 F | 0.83" | 17.20" | N/A | N/A | 4.8 F | 0.5 F |
| 10/28 | 46 F | 75 F | 60 F | 0.89" | 17.26" | N/A | N/A | 5.1 F | 0.4 F |
| 10/29 | 46 F | 74 F | 60 F | 0.95" | 17.32" | N/A | N/A | 5.4 F | 0.4 F |
| 10/30 | 45 F | 74 F | 60 F | 1.02" | 17.39" | N/A | N/A | 5.7 F | 0.3 F |
| 10/31 | 45 F | 73 F | 59 F | 1.08" | 17.45" | N/A | N/A | 6.1 F | 0.3 F |
