San Diego County (San Diego)
October
Weather in San Diego County, California for October 2026
Your guide to San Diego County weather in October - trends and predictions
So far, October 2026 in San Diego County shows a warmer trend than usual by 3.3 °C.
Expect cooler weather in the next days in San Diego County with the forecast suggesting a temperature of 21 °C, lower than the historical average.
In general, the average temperature in San Diego County at the beginning of October is 24.8 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 22.2 °C by the end of October.
With an average of 2 rainy days, San Diego County experiences minimal rainfall in October.
Is October a good time to visit San Diego County? check out the best time to travel to San Diego County page.
✨ Is October a good time to visit San Diego County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
29
Dry days
2
Rainy days
0
Snow days
23°/16°
Temperatures
15 km/h
Avg max wind
70 %
Avg humidity
San Diego County Weather October
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Temperatures trend during October in San Diego County
See the weather trend as well as the moving average line
October weather in San Diego County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Oct. 1 |  Patchy rain possible | 23° /16° | 0.1 mm | 6 | |
| Oct. 2 |  Partly cloudy | 25° /16° | 0 mm | 6 | |
| Oct. 3 | Partly cloudy | 25° /18° | 0 mm | 6 | |
| Oct. 4 | Partly cloudy | 25° /19° | 0 mm | 6 | |
| Oct. 5 | Partly cloudy | 25° /19° | 0 mm | 6 | |
| Oct. 6 | Partly cloudy | 25° /19° | 0 mm | 6 | |
| Oct. 7 | Partly cloudy | 25° /18° | 0 mm | 6 | |
| Oct. 8 | Partly cloudy | 24° /18° | 0 mm | 6 | |
| Oct. 9 | Partly cloudy | 23° /18° | 0 mm | 6 | |
| Oct. 10 |  Light rain | 24° /19° | 3.8 mm | 5 | |
| Oct. 11 | Light rain | 21° /17° | 7.5 mm | 4 | |
| Oct. 12 |  Cloudy | 20° /15° | 0.9 mm | 4 | |
| Oct. 13 |  Overcast | 20° /15° | 0 mm | 5 | |
| Oct. 14 | Light rain | 21° /16° | 8.1 mm | 5 | |
| Oct. 15 | Patchy rain possible | 23° /16° | 1.2 mm | 6 | |
| Oct. 16 | Overcast | 25° /17° | 0 mm | 5.9 | |
| Oct. 17 | Overcast | 23° /18° | 0 mm | 5 | |
| Oct. 18 | Partly cloudy | 22° /16° | 0 mm | 5 | |
| Oct. 19 |  Sunny | 25° /17° | 0 mm | 5.7 | |
| Oct. 20 | Partly cloudy | 24° /17° | 0 mm | 5.6 | |
| Oct. 21 | Patchy rain possible | 22° /16° | 1.3 mm | 5 | |
| Oct. 22 | Patchy rain possible | 21° /17° | 1.2 mm | 4 | |
| Oct. 23 | Light rain shower | 20° /16° | 1.4 mm | 4 | |
| Oct. 24 | Overcast | 21° /16° | 0 mm | 5 | |
| Oct. 25 | Partly cloudy | 21° /15° | 0 mm | 5 | |
| Oct. 26 | Sunny | 22° /17° | 0 mm | 5 | |
| Oct. 27 | Cloudy | 21° /16° | 0 mm | 4 | |
| Oct. 28 | Overcast | 22° /18° | 0 mm | 5 | |
| Oct. 29 | Overcast | 21° /19° | 0.1 mm | 3.7 | |
| Oct. 30 | Patchy rain possible | 20° /19° | 0.5 mm | 3.9 | |
| Oct. 31 | Patchy rain possible | 21° /18° | 1.1 mm | 3.9 | |
| Next | |||||
Important Notice
Our weather forecast for San Diego County in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Diego County forecast closer to your planned date for the most up-to-date weather information.
Change Month
San Diego County in October - FAQ
What are the expected maximum and minimum temperatures in San Diego County during October?
During October, expect a variety of temperatures with highs around 23° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Diego County during October?
In October, San Diego County can expect light to moderate rainfall, totaling 22.3 mm across approximately 2 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in San Diego County during October?
The average wind speed in San Diego County during October is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in San Diego County
Explore the daily rainfall trends and prepare for San Diego Countys October weather 💧
Typically, San Diego County has 2 rainy days in October with a total of 22.3 mm of rainfall.
UV exposure in San Diego County during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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