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What is Vallecito, CA, Weather Like in October?
During the month of October, Vallecito, CA,
has an average daytime high temperature of 80°F and an average overnight low temperature dropping to 53°F.
Around 1.51 inches of precipitation is received during the month,
with about 21.68 inches falling in a typical year.
As you might expect, snow is not common in the month of October.
Annually, Vallecito receives around 0.20 inches of snow.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 26, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 71.3 F
(-9.8 vs avg)
Average Low: 51.3 F
(-1.9 vs avg)
Daytime temperatures were significantly below average.
Actual data from: MID_PG157
Vallecito, CA Daily Weather Averages for October
Recorded at New Melones Dam Hq
(usc00046174),
5.9 miles
S of
Vallecito, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 56 F | 86 F | 71 F | 0.03" | 20.20" | 0.00" | 0.20" | 0.8 F | 6.9 F |
| 10/2 | 56 F | 86 F | 71 F | 0.05" | 20.22" | 0.00" | 0.20" | 0.8 F | 6.6 F |
| 10/3 | 56 F | 85 F | 71 F | 0.08" | 20.25" | 0.00" | 0.20" | 0.9 F | 6.4 F |
| 10/4 | 56 F | 85 F | 70 F | 0.12" | 20.29" | 0.00" | 0.20" | 0.9 F | 6.1 F |
| 10/5 | 55 F | 84 F | 70 F | 0.15" | 20.32" | 0.00" | 0.20" | 1 F | 5.8 F |
| 10/6 | 55 F | 84 F | 70 F | 0.18" | 20.35" | 0.00" | 0.20" | 1 F | 5.5 F |
| 10/7 | 55 F | 84 F | 69 F | 0.22" | 20.39" | 0.00" | 0.20" | 1.1 F | 5.3 F |
| 10/8 | 55 F | 83 F | 69 F | 0.25" | 20.42" | 0.00" | 0.20" | 1.2 F | 5 F |
| 10/9 | 54 F | 83 F | 69 F | 0.28" | 20.45" | 0.00" | 0.20" | 1.3 F | 4.8 F |
| 10/10 | 54 F | 82 F | 68 F | 0.32" | 20.49" | 0.00" | 0.20" | 1.4 F | 4.5 F |
| 10/11 | 54 F | 82 F | 68 F | 0.36" | 20.53" | 0.00" | 0.20" | 1.5 F | 4.3 F |
| 10/12 | 53 F | 82 F | 67 F | 0.40" | 20.57" | 0.00" | 0.20" | 1.6 F | 4 F |
| 10/13 | 53 F | 81 F | 67 F | 0.44" | 20.61" | 0.00" | 0.20" | 1.7 F | 3.8 F |
| 10/14 | 53 F | 81 F | 67 F | 0.48" | 20.65" | 0.00" | 0.20" | 1.8 F | 3.6 F |
| 10/15 | 53 F | 80 F | 66 F | 0.53" | 20.70" | 0.00" | 0.20" | 1.9 F | 3.3 F |
| 10/16 | 52 F | 80 F | 66 F | 0.59" | 20.76" | 0.00" | 0.20" | 2.1 F | 3.1 F |
| 10/17 | 52 F | 79 F | 66 F | 0.64" | 20.81" | 0.00" | 0.20" | 2.2 F | 2.9 F |
| 10/18 | 52 F | 79 F | 65 F | 0.70" | 20.87" | 0.00" | 0.20" | 2.4 F | 2.8 F |
| 10/19 | 52 F | 79 F | 65 F | 0.76" | 20.93" | 0.00" | 0.20" | 2.5 F | 2.6 F |
| 10/20 | 51 F | 78 F | 65 F | 0.81" | 20.98" | 0.00" | 0.20" | 2.7 F | 2.4 F |
| 10/21 | 51 F | 78 F | 64 F | 0.87" | 21.04" | 0.00" | 0.20" | 2.9 F | 2.3 F |
| 10/22 | 51 F | 77 F | 64 F | 0.92" | 21.09" | 0.00" | 0.20" | 3.1 F | 2.1 F |
| 10/23 | 51 F | 77 F | 64 F | 0.98" | 21.15" | 0.00" | 0.20" | 3.3 F | 1.9 F |
| 10/24 | 50 F | 76 F | 63 F | 1.03" | 21.20" | 0.00" | 0.20" | 3.5 F | 1.8 F |
| 10/25 | 50 F | 76 F | 63 F | 1.09" | 21.26" | 0.00" | 0.20" | 3.7 F | 1.6 F |
| 10/26 | 50 F | 75 F | 63 F | 1.16" | 21.33" | 0.00" | 0.20" | 3.9 F | 1.5 F |
| 10/27 | 50 F | 75 F | 62 F | 1.22" | 21.39" | 0.00" | 0.20" | 4.1 F | 1.3 F |
| 10/28 | 49 F | 75 F | 62 F | 1.29" | 21.46" | 0.00" | 0.20" | 4.3 F | 1.2 F |
| 10/29 | 49 F | 74 F | 62 F | 1.36" | 21.53" | 0.00" | 0.20" | 4.6 F | 1.1 F |
| 10/30 | 49 F | 74 F | 61 F | 1.44" | 21.61" | 0.00" | 0.20" | 4.8 F | 1 F |
| 10/31 | 49 F | 73 F | 61 F | 1.51" | 21.68" | 0.00" | 0.20" | 5.1 F | 0.9 F |
