Fontana
August
Weather in Fontana for August 2025
Your guide to Fontana weather in August - trends and predictions
In general, the average temperature in Fontana at the beginning of August is 35.9 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 34.4 °F by the end of August.
Fontana sees moderate rainfall in August, averaging 7 rainy days.
- New! Chat with our AI weatherman - it’s amazing and free.
24
Dry days
7
Rainy days
0
Snow days
34°/21°
Temperatures
16 km/h
Avg max wind
40 %
Avg humidity
Fontana in August average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  34° | 2  35° | 3  36° | ||||
| 4 36° | 5 38° | 6 38° | 7 34° | 8  33° | 9  33° | 10 32° |
| 11 32° | 12 33° | 13 33° | 14 35° | 15 36° | 16  36° | 17 37° |
| 18 35° | 19 33° | 20 31° | 21 31° | 22 31° | 23 30° | 24 29° |
| 25 32° | 26 34° | 27 35° | 28 35° | 29 36° | 30 35° | 31 34° |
You can click on date
Access Fontana weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during August in Fontana
See the weather trend as well as the moving average line
August weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Overcast | 34° /22° | 0 mm | 7 | |
| Aug. 2 | Partly cloudy | 35° /22° | 0 mm | 9 | |
| Aug. 3 | Sunny | 36° /23° | 0 mm | 9 | |
| Aug. 4 | Sunny | 36° /22° | 0 mm | 9 | |
| Aug. 5 | Sunny | 38° /24° | 0 mm | 9 | |
| Aug. 6 | Sunny | 38° /24° | 0 mm | 9 | |
| Aug. 7 | Sunny | 34° /22° | 0 mm | 9 | |
| Aug. 8 | Patchy rain possible | 33° /21° | 0.3 mm | 8 | |
| Aug. 9 | Moderate or heavy rain shower | 33° /21° | 3 mm | 8 | |
| Aug. 10 | Patchy rain possible | 32° /21° | 0.1 mm | 8 | |
| Aug. 11 | Patchy rain possible | 32° /21° | 0.2 mm | 8 | |
| Aug. 12 | Sunny | 33° /20° | 0 mm | 8 | |
| Aug. 13 | Sunny | 33° /20° | 0 mm | 8 | |
| Aug. 14 | Sunny | 35° /21° | 0 mm | 9 | |
| Aug. 15 | Sunny | 36° /22° | 0 mm | 9 | |
| Aug. 16 | Heavy rain at times | 36° /24° | 0.6 mm | 9 | |
| Aug. 17 | Sunny | 37° /23° | 0 mm | 9 | |
| Aug. 18 | Sunny | 35° /21° | 0 mm | 9 | |
| Aug. 19 | Patchy rain possible | 33° /22° | 0.4 mm | 8 | |
| Aug. 20 | Moderate or heavy rain shower | 31° /21° | 36.5 mm | 7 | |
| Aug. 21 | Patchy rain possible | 31° /20° | 12.4 mm | 8 | |
| Aug. 22 | Partly cloudy | 31° /18° | 0 mm | 8 | |
| Aug. 23 | Sunny | 30° /17° | 0 mm | 8 | |
| Aug. 24 | Partly cloudy | 29° /18° | 0 mm | 8 | |
| Aug. 25 | Sunny | 32° /19° | 0 mm | 8 | |
| Aug. 26 | Sunny | 34° /21° | 0 mm | 9 | |
| Aug. 27 | Sunny | 35° /22° | 0 mm | 9 | |
| Aug. 28 | Sunny | 35° /22° | 0 mm | 9 | |
| Aug. 29 | Sunny | 36° /22° | 0 mm | 9 | |
| Aug. 30 | Sunny | 35° /23° | 0 mm | 9 | |
| Aug. 31 | Sunny | 34° /22° | 0 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Fontana in August 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 Fontana forecast closer to your planned date for the most up-to-date weather information.
Fontana in August - FAQ
What are the expected maximum and minimum temperatures in Fontana during August?
During August, expect a variety of temperatures with highs around 34° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Fontana during August?
Significant rainfall exceeding 106.9 mm is expected in Fontana during August, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Fontana during August?
The average wind speed in Fontana during August is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Fontana
Explore the daily rainfall trends and prepare for Fontanas August weather 💧
UV exposure in Fontana during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
Quick links
You are here
Where is Fontana?Get accurate weather forecasts for Fontana, located at latitude 34.092 and longitude -117.435. Stay updated with localized weather information tailored for Fontana.
Found a mistake?
We appreciate your attention to details. Tell us here.