Irwindale, California Climate
United States
Pop. 1,437 Elev. 144 m / 472 ft
TZ: America/Los_Angeles (UTC-7) ·
Irwindale has a dry climate with warm summers reaching 87°F (31°C) in August and cool winters averaging 45°F (7°C) in January. Humidity pushes the summer feels-like temperature to around 92°F (33°C). Rain falls on about 23 days per year (19.2 in / 487 mm total). The city averages 227 sunny days per year. Ocean water temperatures reach 73°F (23°C) in summer.
| Temperature | 87°F (31°C) high | 45°F (7°C) low |
| Feels like | 92°F (33°C) high | 45°F (7°C) low |
| Rain | 23 days | 19.2 in (487 mm) /yr |
| Sky | 227 sunny | 11 stormy |
| Wind | 2.4 mph (1.1 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jan, Apr, May, Jun, Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
33
Jan 56
Feb 51
Mar 41
Apr 48
May 31
Jun 23
Jul 22
Aug 33
Sep 23
Oct 47
Nov 42
Dec Humidity (%)
34
Jan 65
Feb 65
Mar 60
Apr 63
May 63
Jun 59
Jul 55
Aug 61
Sep 60
Oct 66
Nov 60
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 19 mi Ontario International Airport (ONT)
Ski resort 22 mi Mt. Baldy Resort
National park 11 mi Pío Pico State Historic Park
Mountain peak
(5,269 ft) 7 mi Rankin Peak
Hospital 2 mi Kindred Hospital - San Gabriel Valley
Hiking trail 2 mi San Gabriel River Trail - Lario Connector
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 67°F 20°C | 45°F 7°C | 0.7 in 19 mm | — | 18 |
| February | 69°F 20°C | 50°F 10°C | 3.5 in 89 mm | — | 8 |
| March | 67°F 19°C | 49°F 9°C | 2.4 in 62 mm | — | 12 |
| April | 70°F 21°C | 51°F 11°C | 0.6 in 16 mm | — | 13 |
| May | 77°F 25°C | 57°F 14°C | 0.4 in 9 mm | — | 13 |
| June | 80°F 27°C | 61°F 16°C | 0.2 in 5 mm | — | 24 |
| July | 82°F 28°C | 63°F 17°C | 0.1 in 2 mm | — | 27 |
| August | 87°F 31°C | 66°F 19°C | 0.0 in 0 mm | — | 30 |
| September | 85°F 29°C | 66°F 19°C | 0.4 in 11 mm | — | 21 |
| October | 78°F 26°C | 57°F 14°C | 1.6 in 42 mm | — | 27 |
| November | 71°F 22°C | 54°F 12°C | 4.7 in 120 mm | — | 17 |
| December | 70°F 21°C | 51°F 10°C | 4.5 in 113 mm | — | 17 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 18 | 1 |
| February | 8 | 0 |
| March | 12 | 1 |
| April | 13 | 0 |
| May | 13 | 0 |
| June | 24 | 0 |
| July | 27 | 0 |
| August | 30 | 0 |
| September | 21 | 1 |
| October | 27 | 1 |
| November | 17 | 4 |
| December | 17 | 3 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 59°F 15°C | 55°F 13°C |
| February | 59°F 15°C | 57°F 14°C |
| March | 59°F 15°C | 59°F 15°C |
| April | 61°F 16°C | 63°F 17°C |
| May | 66°F 19°C | 68°F 20°C |
| June | 68°F 20°C | 72°F 22°C |
| July | 70°F 21°C | 74°F 23°C |
| August | 73°F 23°C | 77°F 25°C |
| September | 72°F 22°C | 77°F 25°C |
| October | 69°F 21°C | 71°F 22°C |
| November | 67°F 19°C | 65°F 19°C |
| December | 65°F 18°C | 60°F 16°C |