Fontana, California Climate
United States
Pop. 212,704 Elev. 378 m / 1,240 ft
TZ: America/Los_Angeles (UTC-7) ·
Fontana has a dry climate with hot summers reaching 93°F (34°C) in August and cool winters averaging 41°F (5°C) in January. Humidity pushes the summer feels-like temperature to around 99°F (37°C). Rain falls on about 24 days per year (21.9 in / 557 mm total). The city averages 230 sunny days per year. Ocean water temperatures reach 73°F (23°C) in summer.
| Temperature | 93°F (34°C) high | 41°F (5°C) low |
| Feels like | 99°F (37°C) high | 41°F (5°C) low |
| Rain | 24 days | 21.9 in (557 mm) /yr |
| Sky | 230 sunny | 11 stormy |
| Wind | 2.1 mph (1.0 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jan, Apr, May, Jun, Sep, Oct
Sky & Air by Month
Cloud cover (%)
33
Jan 54
Feb 54
Mar 40
Apr 42
May 23
Jun 13
Jul 15
Aug 29
Sep 22
Oct 43
Nov 38
Dec Humidity (%)
33
Jan 59
Feb 64
Mar 56
Apr 56
May 55
Jun 51
Jul 47
Aug 55
Sep 52
Oct 58
Nov 56
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 10 mi Ontario International Airport (ONT)
Ski resort 16 mi Mt. Baldy Resort
National park 28 mi Modjeska Canyon and Tucker Wildlife Sanctuary
Mountain peak
(5,230 ft) 9 mi San Sevaine
Hospital 1 mi Kaiser Permanente Fontana Medical Center
Hiking trail 13 mi "M" Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 66°F 19°C | 41°F 5°C | 0.9 in 24 mm | — | 17 |
| February | 69°F 21°C | 46°F 8°C | 4.4 in 111 mm | — | 10 |
| March | 66°F 19°C | 47°F 8°C | 3.6 in 91 mm | — | 11 |
| April | 72°F 22°C | 50°F 10°C | 0.9 in 22 mm | — | 12 |
| May | 80°F 27°C | 57°F 14°C | 0.4 in 10 mm | — | 15 |
| June | 86°F 30°C | 62°F 17°C | 0.1 in 2 mm | — | 26 |
| July | 88°F 31°C | 64°F 18°C | 0.0 in 1 mm | — | 29 |
| August | 93°F 34°C | 68°F 20°C | 0.0 in 1 mm | — | 29 |
| September | 87°F 31°C | 66°F 19°C | 0.6 in 15 mm | — | 21 |
| October | 81°F 27°C | 55°F 13°C | 1.8 in 46 mm | — | 24 |
| November | 73°F 23°C | 51°F 10°C | 4.9 in 124 mm | — | 18 |
| December | 70°F 21°C | 47°F 8°C | 4.3 in 109 mm | — | 18 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 17 | 1 |
| February | 10 | 1 |
| March | 11 | 2 |
| April | 12 | 0 |
| May | 15 | 0 |
| June | 26 | 0 |
| July | 29 | 0 |
| August | 29 | 0 |
| September | 21 | 1 |
| October | 24 | 0 |
| November | 18 | 3 |
| December | 18 | 3 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 59°F 15°C | 51°F 11°C |
| February | 59°F 15°C | 54°F 12°C |
| March | 59°F 15°C | 57°F 14°C |
| April | 61°F 16°C | 63°F 17°C |
| May | 66°F 19°C | 69°F 21°C |
| June | 68°F 20°C | 75°F 24°C |
| July | 70°F 21°C | 77°F 25°C |
| August | 73°F 23°C | 81°F 27°C |
| September | 72°F 22°C | 79°F 26°C |
| October | 69°F 21°C | 70°F 21°C |
| November | 67°F 19°C | 64°F 18°C |
| December | 65°F 18°C | 56°F 13°C |