Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Willow Creek features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 5 °C (40 °F) and 19 °C (66 °F) through the year, but rarely can drop to -10 °C (15 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 1320 mm (52.0 inches) and receives 94 rainy days on the 1 mm (0.04 inches) threshold annually.Willow Creek enjoys an average of 3123 hours of sunshine throughout the year, and daylight varies from 9 hours 16 minutes to 15 hours 3 minutes per day.
The warmest months in Willow Creek are July, August and September, with daily mean temperatures ranging from 16 to 19 °C (61 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 5 °C (40 - 42 °F) throughout the day. On average each year, Willow Creek experiences 38 days above 25 °C (77.0 °F) and 55 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 19°C (67°F) | 23°C (73°F) | 22°C (71°F) | 25°C (77°F) | 28°C (82°F) | 34°C (94°F) | 31°C (89°F) | 35°C (94°F) | 37°C (98°F) | 30°C (87°F) | 23°C (74°F) | 20°C (68°F) |
Mean maximum | 16°C (61°F) | 18°C (65°F) | 20°C (69°F) | 23°C (73°F) | 25°C (77°F) | 29°C (84°F) | 30°C (86°F) | 31°C (89°F) | 33°C (91°F) | 27°C (81°F) | 21°C (69°F) | 17°C (62°F) |
Average high | 10°C (50°F) | 11°C (51°F) | 12°C (54°F) | 15°C (59°F) | 17°C (63°F) | 21°C (70°F) | 25°C (77°F) | 25°C (78°F) | 23°C (74°F) | 19°C (67°F) | 14°C (57°F) | 9°C (49°F) |
Daily mean | 5°C (42°F) | 5°C (42°F) | 7°C (44°F) | 9°C (49°F) | 12°C (54°F) | 15°C (60°F) | 18°C (65°F) | 19°C (66°F) | 16°C (61°F) | 12°C (54°F) | 8°C (46°F) | 5°C (40°F) |
Average low | 1°C (35°F) | 0°C (33°F) | 2°C (36°F) | 4°C (40°F) | 7°C (44°F) | 10°C (50°F) | 12°C (53°F) | 12°C (54°F) | 10°C (50°F) | 6°C (42°F) | 3°C (37°F) | 1°C (33°F) |
Mean minimum | -4°C (25°F) | -6°C (21°F) | -3°C (26°F) | -1°C (31°F) | 1°C (34°F) | 4°C (39°F) | 8°C (46°F) | 8°C (47°F) | 4°C (40°F) | 1°C (33°F) | -4°C (25°F) | -5°C (24°F) |
Minimum | -9°C (15°F) | -10°C (15°F) | -5°C (24°F) | -3°C (28°F) | -1°C (30°F) | 2°C (36°F) | 6°C (43°F) | 7°C (44°F) | 2°C (37°F) | -1°C (30°F) | -8°C (18°F) | -6°C (22°F) |
Compare temperature, precipitation, sunshine, UV index in Willow Creek, California, United States with other places around the world.
Willow Creek usually has the most precipitation in January, February and March, with an average of 14 rainy days and 219 mm (8.6 inches) of precipitation per month.The driest months in Willow Creek are June, July and August. On average, 9 mm (0.4 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 243 (9.5) | 228 (9.0) | 187 (7.4) | 121 (4.8) | 68 (2.7) | 24 (1.0) | 2 (0.1) | 1 (0.0) | 34 (1.3) | 69 (2.7) | 160 (6.3) | 182 (7.2) |
Average precipitation days (≥ 1 mm) | 14 | 13 | 16 | 10 | 6 | 3 | 0 | 0 | 3 | 6 | 10 | 13 |
The sunniest months in Willow Creek are June, July and August, when the sun shines an average of 12 hours 18 minutes a day.Least sunny months in Willow Creek: January, February and December receive an average of 4 hours 42 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 106 | 169 | 220 | 257 | 329 | 368 | 400 | 363 | 299 | 265 | 190 | 152 |
Mean daily daylight hours | 9h 36m | 10h 38m | 11h 58m | 13h 20m | 14h 29m | 15h 3m | 14h 44m | 13h 42m | 12h 24m | 11h 3m | 9h 52m | 9h 16m |
Willow Creek experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Willow Creek UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 3 | 4 | 7 | 8 | 11 | 11 | 10 | 10 | 9 | 6 | 4 | 2 |