Seasonal Weather Patterns in Rialto, CA
Temperature
Average Daily Temperature (°F)
| Rialto, CA | U.S. Avg. | Difference | |
|---|---|---|---|
| January | 52 | 43 | +9 |
| July | 80 | 79 | +1 |
Average Monthly Number of Hot and Freezing Days
| Rialto, CA | U.S. Avg. | Difference | |
|---|---|---|---|
| Summer: Hot Days | 20 | 11 | +9 |
| Winter: Freezing Days | 1 | 12 | -11 |
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Sunshine
Average Annual Number of Clear and Cloudy Days
| Rialto, CA | U.S. Avg. | Difference | |
|---|---|---|---|
| Clear Days | 269 | 217 | +52 |
| Cloudy Days | 96 | 148 | -52 |
Average Daylight Hours per Day
| Rialto, CA | U.S. Avg. | Difference | |
|---|---|---|---|
| January | 10 | 10 | No difference |
| July | 15 | 15 | No difference |
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Precipitation
Average Annual Number of Rainy and Snow Days
| Rialto, CA | U.S. Avg. | Difference | |
|---|---|---|---|
| Rainy Days | 39 | 46 | -7 |
| Snow Days | 0 | 7 | -7 |
Average Monthly Humidity (%) in Rialto, CA
| Rialto, CA | U.S. Avg. | Difference | |
|---|---|---|---|
| January | 49 | 68 | -19% |
| July | 34 | 61 | -27% |
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