San Joaquin County
May
Weather in San Joaquin County for May 2025
Your guide to San Joaquin County weather in May - trends and predictions
In general, the average temperature in San Joaquin County at the beginning of May is 19.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 28.9 °F by the end of May.
With an average of 2 rainy days, San Joaquin County experiences minimal rainfall in May, ensuring that most days remain pleasantly dry.
- New! Chat with our AI weatherman - it’s amazing and free.
29
Dry days
2
Rainy days
0
Snow days
28°/10°
Temperatures
16 km/h
Avg max wind
51 %
Avg humidity
San Joaquin County in May average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  20° | 2  22° | 3  23° | 4 16° | |||
| 5  18° | 6 19° | 7 21° | 8 23° | 9 26° | 10  26° | 11 29° |
| 12 31° | 13 32° | 14 32° | 15  31° | 16 32° | 17 31° | 18 30° |
| 19 30° | 20 29° | 21 31° | 22 31° | 23 28° | 24 25° | 25 26° |
| 26 28° | 27 30° | 28 27° | 29 29° | 30 30° | 31 32° |
You can click on date
Access San Joaquin County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during May in San Joaquin County
See the weather trend as well as the moving average line
May weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Overcast | 20° /9° | 0 mm | 6 | |
| May 2 | Moderate rain at times | 22° /10° | 2 mm | 6 | |
| May 3 | Cloudy | 23° /10° | 0.3 mm | 6 | |
| May 4 | Moderate rain at times | 16° /8° | 8.9 mm | 4 | |
| May 5 | Patchy rain possible | 18° /7° | 0.4 mm | 4 | |
| May 6 | Moderate rain at times | 19° /8° | 4.1 mm | 5 | |
| May 7 | Patchy rain possible | 21° /9° | 0.2 mm | 6 | |
| May 8 | Patchy rain possible | 23° /9° | 0.1 mm | 6 | |
| May 9 | Overcast | 26° /10° | 0 mm | 6 | |
| May 10 | Sunny | 26° /11° | 0 mm | 7 | |
| May 11 | Sunny | 29° /12° | 0 mm | 8 | |
| May 12 | Sunny | 31° /13° | 0 mm | 8 | |
| May 13 | Sunny | 32° /13° | 0 mm | 8 | |
| May 14 | Patchy rain possible | 32° /14° | 0.1 mm | 8 | |
| May 15 | Partly cloudy | 31° /13° | 0 mm | 8 | |
| May 16 | Cloudy | 32° /14° | 0 mm | 8 | |
| May 17 | Overcast | 31° /12° | 0 mm | 8 | |
| May 18 | Sunny | 30° /12° | 0 mm | 8 | |
| May 19 | Sunny | 30° /12° | 0 mm | 8 | |
| May 20 | Sunny | 29° /12° | 0 mm | 8 | |
| May 21 | Sunny | 31° /11° | 0 mm | 8 | |
| May 22 | Sunny | 31° /12° | 0 mm | 8 | |
| May 23 | Partly cloudy | 28° /13° | 0 mm | 7 | |
| May 24 | Sunny | 25° /11° | 0 mm | 6 | |
| May 25 | Sunny | 26° /11° | 0 mm | 6 | |
| May 26 | Sunny | 28° /10° | 0 mm | 7 | |
| May 27 | Sunny | 30° /11° | 0 mm | 8 | |
| May 28 | Patchy rain possible | 27° /12° | 0.2 mm | 7 | |
| May 29 | Partly cloudy | 29° /10° | 0 mm | 8 | |
| May 30 | Partly cloudy | 30° /12° | 0 mm | 8 | |
| May 31 | Sunny | 32° /13° | 0 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for San Joaquin County in May 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 Joaquin County forecast closer to your planned date for the most up-to-date weather information.
San Joaquin County in May - FAQ
What are the expected maximum and minimum temperatures in San Joaquin County during May?
Enjoy moderate daytime temperatures of up to 28° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Joaquin County during May?
In May, San Joaquin County can expect light to moderate rainfall, totaling 32.2 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 Joaquin County during May?
The average wind speed in San Joaquin County during May is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
Top locations in San Joaquin County
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is San Joaquin County?Get accurate weather forecasts for San Joaquin County, located at latitude 37.958 and longitude -121.291. Stay updated with localized weather information tailored for San Joaquin County.
Found a mistake?
We appreciate your attention to details. Tell us here.