Weather Reports for the city of Fontana in California
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 70.3 | 71.5 | 74.7 | 79.2 | 81.4 | 89.9 |
| Average Low (°F) | 43.9 | 44.8 | 48.0 | 51.6 | 55.1 | 60.2 |
| All Time High (°F) | 89.1 | 98.1 | 97.0 | 99.0 | 102.9 | 114.8 |
| All Time Low (°F) | 28.0 | 28.9 | 36.0 | 37.0 | 43.0 | 50.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 94.7 | 96.4 | 94.0 | 85.9 | 77.5 | 68.5 |
| Average Low (°F) | 64.9 | 65.6 | 63.5 | 56.9 | 48.4 | 43.2 |
| All Time High (°F) | 118.0 | 111.9 | 118.0 | 108.0 | 102.0 | 89.1 |
| All Time Low (°F) | 55.4 | 55.9 | 50.0 | 41.0 | 32.0 | 28.4 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 |
| Avg. Rainfall (in) on Rainy Day | 0.5 | 0.3 | 0.3 | 0.2 | 0.1 | 0.0 |
| All Time Rainfall (in) on Rainy Day | 1.9 | 2.0 | 1.6 | 1.6 | 1.3 | 0.0 |
| 30 Day Rain Accumulation | 1.9 | 1.3 | 1.3 | 0.5 | 0.3 | 0.0 |
| All Time 30 Day Rain Accumulation | 7.5 | 5.7 | 3.9 | 3.5 | 1.3 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 |
| Avg. Rainfall (in) on Rainy Day | 0.3 | 0.1 | 0.6 | 0.2 | 0.2 | 0.4 |
| All Time Rainfall (in) on Rainy Day | 1.4 | 0.1 | 1.8 | 1.0 | 1.7 | 2.8 |
| 30 Day Rain Accumulation | 0.1 | 0.0 | 0.2 | 0.3 | 0.7 | 2.3 |
| All Time 30 Day Rain Accumulation | 2.0 | 0.3 | 1.9 | 1.3 | 2.7 | 8.1 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Instead of using humidity directly we use dew point to measure what people commonly mean when saying it feels humid. Dew point is classified into 4 categories: Dry (under 25°F), Comfortable (25°F to 60°F), Muggy (60°F to 70°F) and Oppressive (70°F or greater). The table below shows the percentage of days with a dew point within a particular class.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Dry | 22.2 | 15.7 | 7.3 | 6.4 | 2.7 | 0.4 |
| Comfortable | 77.8 | 84.3 | 92.7 | 93.4 | 97.3 | 95.9 |
| Muggy | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 3.7 |
| Oppressive | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Dry | 0.0 | 0.0 | 0.3 | 7.7 | 17.8 | 26.6 |
| Comfortable | 81.0 | 81.8 | 88.7 | 90.1 | 82.2 | 73.4 |
| Muggy | 19.0 | 18.1 | 11.0 | 2.1 | 0.0 | 0.0 |
| Oppressive | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 |
The table below shows the distribution of average wind speeds in miles per hour for a given month or day. Wind speed may vary throughout a day and we show the average speed. Peak gusts or sustained maximum speeds may be significantly higher.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 4.0 | 4.0 | 4.0 | 4.0 | 4.6 | 4.7 |
| 50th | 4.8 | 5.3 | 5.8 | 6.3 | 6.7 | 6.9 |
| 75th | 6.4 | 7.2 | 8.1 | 9.0 | 8.9 | 8.7 |
| 90th | 9.2 | 9.7 | 10.4 | 11.1 | 10.7 | 10.2 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 25th | 4.7 | 4.7 | 4.0 | 4.0 | 4.0 | 3.9 |
| 50th | 6.9 | 6.9 | 6.0 | 5.4 | 5.0 | 4.7 |
| 75th | 8.8 | 8.8 | 8.4 | 7.5 | 6.9 | 6.3 |
| 90th | 10.1 | 10.3 | 10.3 | 9.6 | 8.8 | 8.9 |
The table below shows the distribution of wind direction (wind coming out of a particular direction) for a given month or day. Wind direction may vary throughout a day and the computation accounts for all measured changes in direction througout the day or month.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| North | 10.7 | 9.7 | 5.8 | 3.8 | 1.5 | 0.8 |
| NorthEast | 24.7 | 18.6 | 10.7 | 6.0 | 2.5 | 0.7 |
| East | 22.1 | 15.1 | 10.2 | 5.6 | 2.8 | 1.0 |
| SouthEast | 6.1 | 5.5 | 4.9 | 2.6 | 1.7 | 0.8 |
| South | 3.6 | 4.5 | 5.0 | 3.2 | 2.5 | 2.7 |
| SouthWest | 9.6 | 14.8 | 20.9 | 22.3 | 21.7 | 22.0 |
| West | 19.1 | 28.1 | 38.9 | 52.9 | 63.9 | 69.5 |
| NorthWest | 4.2 | 3.5 | 3.6 | 3.6 | 3.4 | 2.5 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 0.4 | 0.6 | 2.0 | 5.8 | 8.8 | 10.5 |
| NorthEast | 0.4 | 0.8 | 4.4 | 12.6 | 20.1 | 25.4 |
| East | 0.5 | 1.0 | 4.5 | 11.0 | 18.2 | 21.3 |
| SouthEast | 0.6 | 0.8 | 2.3 | 3.5 | 5.1 | 6.0 |
| South | 2.7 | 3.1 | 3.2 | 3.8 | 3.8 | 3.9 |
| SouthWest | 21.3 | 22.5 | 21.0 | 17.0 | 12.8 | 10.1 |
| West | 71.7 | 68.8 | 59.9 | 42.9 | 27.2 | 18.5 |
| NorthWest | 2.3 | 2.4 | 2.7 | 3.4 | 4.0 | 4.3 |