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What is San Mateo Coast State Beaches, CA, Weather Like in October?
During the month of October, San Mateo Coast State Beaches, CA,
has an average daytime high temperature of 69°F and an average overnight low temperature dropping to 45°F.
Around 1.26 inches of precipitation is received during the month,
with about 21.67 inches falling in a typical year.
Snow is not common in San Mateo Coast State Beaches, CA.
October 2025: Actual vs. Average Temperatures
Showing temperatures through today (October 25, 2025)
Actual High
Average High
Actual Low
Average Low
Month Summary
Average High: 66.2 F
(-3.3 vs avg)
Average Low: 47.9 F
(+2.2 vs avg)
Daytime temperatures were significantly below average.
Actual data from: MID_079PG
San Mateo Coast State Beaches, CA Daily Weather Averages for October
Recorded at San Gregorio 2 Se
(usc00047807),
2.7 miles
ENE of
San Mateo Coast State Beaches, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 47 F | 71 F | 59 F | 0.02" | 20.43" | 0.00" | 0.00" | 6 F | 0.2 F |
| 10/2 | 47 F | 71 F | 59 F | 0.03" | 20.44" | 0.00" | 0.00" | 6.1 F | 0.2 F |
| 10/3 | 47 F | 71 F | 59 F | 0.05" | 20.46" | 0.00" | 0.00" | 6.2 F | 0.2 F |
| 10/4 | 47 F | 71 F | 59 F | 0.06" | 20.47" | 0.00" | 0.00" | 6.4 F | 0.2 F |
| 10/5 | 47 F | 71 F | 59 F | 0.08" | 20.49" | 0.00" | 0.00" | 6.5 F | 0.2 F |
| 10/6 | 47 F | 70 F | 59 F | 0.10" | 20.51" | 0.00" | 0.00" | 6.7 F | 0.2 F |
| 10/7 | 47 F | 70 F | 58 F | 0.13" | 20.54" | 0.00" | 0.00" | 6.8 F | 0.2 F |
| 10/8 | 46 F | 70 F | 58 F | 0.15" | 20.56" | 0.00" | 0.00" | 7 F | 0.2 F |
| 10/9 | 46 F | 70 F | 58 F | 0.17" | 20.58" | 0.00" | 0.00" | 7.2 F | 0.2 F |
| 10/10 | 46 F | 70 F | 58 F | 0.19" | 20.60" | 0.00" | 0.00" | 7.3 F | 0.2 F |
| 10/11 | 46 F | 70 F | 58 F | 0.22" | 20.63" | 0.00" | 0.00" | 7.5 F | 0.2 F |
| 10/12 | 46 F | 70 F | 58 F | 0.25" | 20.66" | 0.00" | 0.00" | 7.6 F | 0.2 F |
| 10/13 | 46 F | 69 F | 57 F | 0.29" | 20.70" | 0.00" | 0.00" | 7.8 F | 0.2 F |
| 10/14 | 45 F | 69 F | 57 F | 0.32" | 20.73" | 0.00" | 0.00" | 7.9 F | 0.2 F |
| 10/15 | 45 F | 69 F | 57 F | 0.36" | 20.77" | 0.00" | 0.00" | 8 F | 0.1 F |
| 10/16 | 45 F | 69 F | 57 F | 0.41" | 20.82" | 0.00" | 0.00" | 8.1 F | 0.1 F |
| 10/17 | 45 F | 69 F | 57 F | 0.45" | 20.86" | 0.00" | 0.00" | 8.3 F | 0.1 F |
| 10/18 | 45 F | 69 F | 57 F | 0.49" | 20.90" | 0.00" | 0.00" | 8.5 F | 0.1 F |
| 10/19 | 45 F | 68 F | 57 F | 0.54" | 20.95" | 0.00" | 0.00" | 8.6 F | 0.1 F |
| 10/20 | 45 F | 68 F | 56 F | 0.58" | 20.99" | 0.00" | 0.00" | 8.8 F | 0.1 F |
| 10/21 | 44 F | 68 F | 56 F | 0.62" | 21.03" | 0.00" | 0.00" | 8.9 F | 0.1 F |
| 10/22 | 44 F | 68 F | 56 F | 0.67" | 21.08" | 0.00" | 0.00" | 9.1 F | 0.1 F |
| 10/23 | 44 F | 68 F | 56 F | 0.72" | 21.13" | 0.00" | 0.00" | 9.2 F | 0.1 F |
| 10/24 | 44 F | 68 F | 56 F | 0.78" | 21.19" | 0.00" | 0.00" | 9.4 F | 0.1 F |
| 10/25 | 44 F | 67 F | 56 F | 0.83" | 21.24" | 0.00" | 0.00" | 9.5 F | 0.1 F |
| 10/26 | 44 F | 67 F | 55 F | 0.89" | 21.30" | 0.00" | 0.00" | 9.7 F | 0.1 F |
| 10/27 | 43 F | 67 F | 55 F | 0.96" | 21.37" | 0.00" | 0.00" | 9.8 F | 0.1 F |
| 10/28 | 43 F | 67 F | 55 F | 1.03" | 21.44" | 0.00" | 0.00" | 10 F | 0.1 F |
| 10/29 | 43 F | 67 F | 55 F | 1.10" | 21.51" | 0.00" | 0.00" | 10.1 F | 0.1 F |
| 10/30 | 43 F | 67 F | 55 F | 1.18" | 21.59" | 0.00" | 0.00" | 10.3 F | 0.1 F |
| 10/31 | 43 F | 66 F | 55 F | 1.26" | 21.67" | 0.00" | 0.00" | 10.4 F | 0.1 F |
