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What is Oceanside Harbor, CA, Weather Like in October?
During the month of October, Oceanside Harbor, CA,
has an average daytime high temperature of 70°F and an average overnight low temperature dropping to 58°F.
Around 0.57 inches of precipitation is received during the month,
with about 7.94 inches falling in a typical year.
Snow is not common in Oceanside Harbor, 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: 68.5 F
(-1.2 vs avg)
Average Low: 56.5 F
(-2.5 vs avg)
Actual data from: MID_E3174
Oceanside Harbor, CA Daily Weather Averages for October
Recorded at Oceanside Marina
(usc00046377),
0.1 miles
N of
Oceanside Harbor, CA
| Day | Avg Temps (°F) | Precip (in) | Snow (in) | Degree Days (°F) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Low | High | Mean | Month | Year | Month | Year | Heat | Cool | |
| 10/1 | 61 F | 70 F | 66 F | 0.01" | 7.38" | 0.00" | 0.00" | 0.9 F | 1.7 F |
| 10/2 | 61 F | 70 F | 66 F | 0.01" | 7.38" | 0.00" | 0.00" | 1 F | 1.6 F |
| 10/3 | 61 F | 70 F | 66 F | 0.02" | 7.39" | 0.00" | 0.00" | 1 F | 1.6 F |
| 10/4 | 61 F | 70 F | 65 F | 0.03" | 7.40" | 0.00" | 0.00" | 1.1 F | 1.6 F |
| 10/5 | 61 F | 70 F | 65 F | 0.05" | 7.42" | 0.00" | 0.00" | 1.2 F | 1.5 F |
| 10/6 | 60 F | 70 F | 65 F | 0.06" | 7.43" | 0.00" | 0.00" | 1.3 F | 1.4 F |
| 10/7 | 60 F | 70 F | 65 F | 0.07" | 7.44" | 0.00" | 0.00" | 1.3 F | 1.4 F |
| 10/8 | 60 F | 70 F | 65 F | 0.09" | 7.46" | 0.00" | 0.00" | 1.4 F | 1.3 F |
| 10/9 | 60 F | 70 F | 65 F | 0.10" | 7.47" | 0.00" | 0.00" | 1.5 F | 1.3 F |
| 10/10 | 60 F | 70 F | 65 F | 0.12" | 7.49" | 0.00" | 0.00" | 1.6 F | 1.2 F |
| 10/11 | 59 F | 70 F | 65 F | 0.13" | 7.50" | 0.00" | 0.00" | 1.7 F | 1.2 F |
| 10/12 | 59 F | 70 F | 64 F | 0.15" | 7.52" | 0.00" | 0.00" | 1.7 F | 1.1 F |
| 10/13 | 59 F | 70 F | 64 F | 0.17" | 7.54" | 0.00" | 0.00" | 1.8 F | 1.1 F |
| 10/14 | 59 F | 70 F | 64 F | 0.19" | 7.56" | 0.00" | 0.00" | 1.9 F | 1 F |
| 10/15 | 58 F | 70 F | 64 F | 0.20" | 7.57" | 0.00" | 0.00" | 2 F | 1 F |
| 10/16 | 58 F | 70 F | 64 F | 0.22" | 7.59" | 0.00" | 0.00" | 2.1 F | 1 F |
| 10/17 | 58 F | 70 F | 64 F | 0.25" | 7.62" | 0.00" | 0.00" | 2.2 F | 0.9 F |
| 10/18 | 58 F | 69 F | 64 F | 0.27" | 7.64" | 0.00" | 0.00" | 2.3 F | 0.9 F |
| 10/19 | 58 F | 69 F | 64 F | 0.29" | 7.66" | 0.00" | 0.00" | 2.4 F | 0.8 F |
| 10/20 | 57 F | 69 F | 63 F | 0.31" | 7.68" | 0.00" | 0.00" | 2.5 F | 0.8 F |
| 10/21 | 57 F | 69 F | 63 F | 0.33" | 7.70" | 0.00" | 0.00" | 2.6 F | 0.8 F |
| 10/22 | 57 F | 69 F | 63 F | 0.36" | 7.73" | 0.00" | 0.00" | 2.7 F | 0.7 F |
| 10/23 | 57 F | 69 F | 63 F | 0.38" | 7.75" | 0.00" | 0.00" | 2.8 F | 0.7 F |
| 10/24 | 57 F | 69 F | 63 F | 0.40" | 7.77" | 0.00" | 0.00" | 2.8 F | 0.7 F |
| 10/25 | 56 F | 69 F | 63 F | 0.42" | 7.79" | 0.00" | 0.00" | 2.9 F | 0.6 F |
| 10/26 | 56 F | 69 F | 63 F | 0.45" | 7.82" | 0.00" | 0.00" | 3.1 F | 0.6 F |
| 10/27 | 56 F | 69 F | 62 F | 0.47" | 7.84" | 0.00" | 0.00" | 3.2 F | 0.6 F |
| 10/28 | 56 F | 69 F | 62 F | 0.49" | 7.86" | 0.00" | 0.00" | 3.3 F | 0.6 F |
| 10/29 | 56 F | 69 F | 62 F | 0.52" | 7.89" | 0.00" | 0.00" | 3.5 F | 0.6 F |
| 10/30 | 55 F | 69 F | 62 F | 0.54" | 7.91" | 0.00" | 0.00" | 3.6 F | 0.6 F |
| 10/31 | 55 F | 69 F | 62 F | 0.57" | 7.94" | 0.00" | 0.00" | 3.7 F | 0.5 F |
