Marietta-Alderwood, Washington Climate
United States
Pop. 3,906 Elev. 40 m / 131 ft
TZ: America/Los_Angeles (UTC-7) ·
Marietta-Alderwood has cool summers with average highs of 70°F (21°C) in August, and cool winters averaging 34°F (1°C) in February. Rain falls on about 98 days per year (56.4 in / 1432 mm total), with snow on 2 days and 13 in (327 mm) of annual accumulation. The city averages 80 sunny days per year and around 33 thunderstorm days. Ocean water temperatures reach 60°F (16°C) in summer.
| Temperature | 70°F (21°C) high | 34°F (1°C) low |
| Feels like | 30°F (-1°C) low | |
| Rain | 98 days | 56.4 in (1432 mm) /yr |
| Snow | 2 days | 12.9 in (327 mm) /yr |
| Sky | 80 sunny | 33 stormy |
| Wind | 3.5 mph (1.6 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
55
Jan 73
Feb 82
Mar 56
Apr 62
May 57
Jun 40
Jul 58
Aug 58
Sep 64
Oct 85
Nov 86
Dec Humidity (%)
85
Jan 82
Feb 82
Mar 74
Apr 77
May 80
Jun 78
Jul 81
Aug 84
Sep 82
Oct 87
Nov 88
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 1 mi Bellingham International Airport (BLI)
Ski resort 44 mi Mt Seymour
National park 17 mi Peace Arch Provincial Park
Mountain peak
(6,067 ft) 25 mi
Hospital 4 mi PeaceHealth St. Joseph Medical Center
Hiking trail 5 mi Barkley Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 44°F 6°C | 37°F 3°C | 3.1 in 78 mm | — | 11 |
| February | 42°F 6°C | 34°F 1°C | 4.9 in 123 mm | 11.8 in301 mm | 5 |
| March | 50°F 10°C | 42°F 6°C | 8.5 in 215 mm | 0.7 in18 mm | 1 |
| April | 55°F 13°C | 44°F 7°C | 4.2 in 107 mm | — | 7 |
| May | 59°F 15°C | 49°F 10°C | 2.7 in 69 mm | — | 7 |
| June | 63°F 17°C | 54°F 12°C | 1.1 in 27 mm | — | 9 |
| July | 68°F 20°C | 58°F 15°C | 0.3 in 7 mm | — | 15 |
| August | 70°F 21°C | 60°F 15°C | 2.6 in 67 mm | — | 10 |
| September | 67°F 19°C | 57°F 14°C | 1.3 in 34 mm | — | 8 |
| October | 56°F 14°C | 48°F 9°C | 6.3 in 160 mm | — | 7 |
| November | 51°F 11°C | 44°F 7°C | 8.3 in 210 mm | — | 0 |
| December | 47°F 8°C | 42°F 5°C | 13.2 in 335 mm | 0.3 in8 mm | 0 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 11 | 0 |
| February | 5 | 5 |
| March | 1 | 4 |
| April | 7 | 3 |
| May | 7 | 1 |
| June | 9 | 0 |
| July | 15 | 0 |
| August | 10 | 1 |
| September | 8 | 0 |
| October | 7 | 6 |
| November | 0 | 4 |
| December | 0 | 9 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 47°F 8°C | 43°F 6°C |
| February | 46°F 8°C | 40°F 4°C |
| March | 47°F 8°C | 41°F 5°C |
| April | 50°F 10°C | 44°F 7°C |
| May | 54°F 12°C | 50°F 10°C |
| June | 59°F 15°C | 58°F 14°C |
| July | 60°F 16°C | 63°F 17°C |
| August | 60°F 16°C | 66°F 19°C |
| September | 59°F 15°C | 65°F 18°C |
| October | 55°F 13°C | 55°F 13°C |
| November | 50°F 10°C | 49°F 9°C |
| December | 49°F 9°C | 46°F 8°C |