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Rainfall Totals Last 24 Hours in Rialto, CA
Last Rain · 24 Hours · 72 Hours · 7 Days · 30 Days
This Month · This Year
How much rain did Rialto, CA get?
| Last RainMay 5, 2026 | 24 Hours | 72 Hours | 7 Days | 30 Days | This Month | This Year |
|---|---|---|---|---|---|---|
| 0.10″ | 0.00″ | 0.00″ | 0.00″ | 0.00″ | 0.00″ | 5.31″ |
Precipitation by month
Wettest month
2.86″
February 2026
Driest month
0.00″
June 2026
Longest dry streak
123 days
ended Sep 5
Most rain in 24 hours
1.25″
Nov 15
| Month | Rain | Normal | % of normal | Rainy days |
|---|---|---|---|---|
| October 2025 | 0.61″ | 0.33″ | — | 2 |
| November 2025 | 2.52″ | 0.57″ | 442% | 6 |
| December 2025 | 1.19″ | 1.51″ | 79% | 4 |
| January 2026 | 1.53″ | 2.29″ | 67% | 6 |
| February 2026 | 2.86″ | 2.41″ | 119% | 5 |
| March 2026 | 0.01″ | 1.21″ | 1% | 1 |
| April 2026 | 0.81″ | 0.59″ | 137% | 4 |
| May 2026 | 0.10″ | 0.20″ | — | 1 |
| June 2026 | 0.00″ | 0.01″ | — | 0 |
| July 2026 | 0.00″ | 0.12″ | — | 0 |
| August 2026 | 0.00″ | 0.02″ | — | 0 |
| September 2026 | 0.00″ | 0.11″ | — | 0 |