Cosmopolis, Washington Climate
United States
Pop. 1,594 Elev. 6 m / 20 ft
TZ: America/Los_Angeles (UTC-7) ·
Cosmopolis sees mild summers peaking at 74°F (23°C) in August, and cool winters that bottom out around 35°F (2°C) in January. Precipitation occurs on roughly 83 days per year (59.2 in / 1503 mm total), with 7 in (182 mm) of annual snowfall. The city averages 64 sunny days per year and around 39 thunderstorm days. Ocean water temperatures reach 62°F (16°C) in summer.
| Temperature | 74°F (24°C) high | 35°F (2°C) low |
| Feels like | 35°F (2°C) low | |
| Rain | 83 days | 59.2 in (1503 mm) /yr |
| Snow | 0 days | 7.2 in (182 mm) /yr |
| Sky | 64 sunny | 39 stormy |
| Wind | 3.4 mph (1.5 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
60
Jan 74
Feb 88
Mar 59
Apr 65
May 59
Jun 56
Jul 62
Aug 62
Sep 62
Oct 88
Nov 85
Dec Humidity (%)
86
Jan 83
Feb 83
Mar 68
Apr 69
May 74
Jun 74
Jul 76
Aug 81
Sep 82
Oct 87
Nov 90
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 41 mi Olympia Regional Airport (OLM)
Ski resort 111 mi Tubing Hill
National park 57 mi Lewis and Clark National Historical Park
Mountain peak
(5,069 ft) 39 mi Capitol Peak
Hospital 3 mi Harbor Regional Health East Campus
Hiking trail 29 mi Spoon Creek Falls Trail #885
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 47°F 8°C | 35°F 2°C | 3.7 in 93 mm | 0.0 in1 mm | 7 |
| February | 47°F 8°C | 37°F 3°C | 7.3 in 186 mm | 7.1 in179 mm | 3 |
| March | 53°F 12°C | 43°F 6°C | 9.4 in 240 mm | 0.1 in3 mm | 1 |
| April | 61°F 16°C | 44°F 7°C | 3.0 in 75 mm | — | 7 |
| May | 64°F 18°C | 47°F 8°C | 2.2 in 55 mm | — | 6 |
| June | 67°F 20°C | 50°F 10°C | 0.7 in 17 mm | — | 9 |
| July | 72°F 22°C | 53°F 11°C | 0.1 in 2 mm | — | 9 |
| August | 74°F 24°C | 56°F 13°C | 1.8 in 47 mm | — | 6 |
| September | 70°F 21°C | 53°F 12°C | 2.6 in 67 mm | — | 9 |
| October | 60°F 15°C | 47°F 8°C | 6.7 in 169 mm | — | 7 |
| November | 53°F 12°C | 45°F 7°C | 8.3 in 212 mm | — | 0 |
| December | 50°F 10°C | 43°F 6°C | 13.4 in 340 mm | — | 0 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 7 | 2 |
| February | 3 | 5 |
| March | 1 | 7 |
| April | 7 | 2 |
| May | 6 | 1 |
| June | 9 | 0 |
| July | 9 | 0 |
| August | 6 | 0 |
| September | 9 | 0 |
| October | 7 | 7 |
| November | 0 | 4 |
| December | 0 | 11 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 50°F 10°C | 42°F 5°C |
| February | 48°F 9°C | 38°F 3°C |
| March | 50°F 10°C | 45°F 7°C |
| April | 52°F 11°C | 50°F 10°C |
| May | 57°F 14°C | 54°F 12°C |
| June | 58°F 14°C | 59°F 15°C |
| July | 57°F 14°C | 62°F 17°C |
| August | 61°F 16°C | 65°F 18°C |
| September | 62°F 16°C | 63°F 17°C |
| October | 58°F 14°C | 55°F 13°C |
| November | 55°F 13°C | 49°F 10°C |
| December | 53°F 12°C | 47°F 8°C |