San Diego County (San Diego)
March
Weather in San Diego County, California for March 2026
Your guide to San Diego County weather in March - trends and predictions
Wind Advisory - See hour by hour.
So far, March 2026 in San Diego County shows a warmer trend than usual by 4.1 °F.
The forecast for the upcoming days in San Diego County predicts a temperature of 20.2 °F, which is slightly above the historical average.
In general, the average temperature in San Diego County at the beginning of March is 15.4 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 18.1 °F by the end of March.
San Diego County in March brings notable rainfall, with an average of 16 rainy days and a total precipitation of 125.6 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
More
15
Dry days
16
Rainy days
0
Snow days
15°/11°
Temperatures
20 km/h
Avg max wind
74 %
Avg humidity
San Diego County Weather March
Move between months or click on a day
Temperatures trend during March in San Diego County
See the weather trend as well as the moving average line
March weather in San Diego County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Mar. 1 |  Light rain shower | 15° /11° | 1.4 mm | 3 | |
| Mar. 2 |  Sunny | 15° /10° | 1.5 mm | 3 | |
| Mar. 3 | Sunny | 16° /10° | 0.7 mm | 4 | |
| Mar. 4 |  Partly cloudy | 15° /11° | 0.1 mm | 4 | |
| Mar. 5 |  Overcast | 15° /11° | 5.7 mm | 4 | |
| Mar. 6 | Overcast | 16° /10° | 6.9 mm | 4 | |
| Mar. 7 | Overcast | 16° /9° | 19.2 mm | 4 | |
| Mar. 8 | Partly cloudy | 19° /9° | 0 mm | 5 | |
| Mar. 9 | Partly cloudy | 18° /10° | 0 mm | 5 | |
| Mar. 10 | Partly cloudy | 17° /11° | 0 mm | 5 | |
| Mar. 11 |  Mist | 15° /11° | 6.5 mm | 4 | |
| Mar. 12 | Fog | 19° /12° | 0.1 mm | 4 | |
| Mar. 13 | Overcast | 18° /12° | 14.5 mm | 5 | |
| Mar. 14 | Overcast | 17° /12° | 3.3 mm | 4 | |
| Mar. 15 | Light rain shower | 16° /11° | 7.5 mm | 4 | |
| Mar. 16 | Overcast | 19° /11° | 0.2 mm | 4 | |
| Mar. 17 | Mist | 18° /11° | 0.1 mm | 4 | |
| Mar. 18 | Mist | 19° /11° | 0.1 mm | 4 | |
| Mar. 19 | Fog | 21° /12° | 0 mm | 5 | |
| Mar. 20 | Partly cloudy | 19° /12° | 0.8 mm | 5 | |
| Mar. 21 | Light rain shower | 18° /11° | 3.2 mm | 5 | |
| Mar. 22 | Light rain shower | 18° /12° | 4 mm | 4 | |
| Mar. 23 | Light rain shower | 17° /12° | 2.5 mm | 4 | |
| Mar. 24 | Partly cloudy | 18° /12° | 3.9 mm | 4 | |
| Mar. 25 | Overcast | 18° /11° | 0.1 mm | 4 | |
| Mar. 26 | Partly cloudy | 18° /11° | 0.1 mm | 5 | |
| Mar. 27 |  Cloudy | 19° /10° | 0 mm | 5 | |
| Mar. 28 | Partly cloudy | 18° /11° | 0 mm | 5 | |
| Mar. 29 |  Light drizzle | 17° /12° | 0.4 mm | 4 | |
| Mar. 30 | Overcast | 19° /14° | 0 mm | 1.6 | |
| Mar. 31 | Overcast | 18° /16° | 0 mm | 1.8 | |
| Next | |||||
Important Notice
Our weather forecast for San Diego County in March 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 March - FAQ
What are the expected maximum and minimum temperatures in San Diego County during March?
During March, expect a variety of temperatures with highs around 15° and lows near 11°, suitable for diverse activities and preferences.
How much rainfall should be expected in San Diego County during March?
Significant rainfall exceeding 125.6 mm is expected in San Diego County during March, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in San Diego County during March?
The average wind speed in San Diego County during March is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
March rainfall patterns in San Diego County
Explore the daily rainfall trends and prepare for San Diego Countys March weather 💧
Typically, San Diego County has 16 rainy days in March with a total of 125.6 mm of rainfall.
UV exposure in San Diego County during March
Stay informed about UV levels for safe outdoor activities throughout the month of March ☀️
Top locations in San Diego County
Select a location for an accurate weather forecast
More Locations Quick links
More San Diego County weather pages
You are here
Where is San Diego County?Get accurate weather forecasts for San Diego County, located at latitude 32.716 and longitude -117.165. Stay updated with localized weather information tailored for San Diego County.
Found a mistake?
We appreciate your attention to details. Tell us here.