Sammamish, Washington Climate
United States
Pop. 52,253 Elev. 23 m / 75 ft
TZ: America/Los_Angeles (UTC-7) ·
Summers in Sammamish are mild, with July highs around 78°F (26°C), while winters are cold with January lows of 32°F (0°C). Expect around 92 rainy days annually (69.0 in / 1753 mm total), with snow on 2 days and 15 in (374 mm) of annual accumulation. The city averages 82 sunny days per year and around 29 thunderstorm days. Ocean water temperatures reach 61°F (16°C) in summer.
| Temperature | 78°F (25°C) high | 32°F (0°C) low |
| Feels like | 31°F (-1°C) low | |
| Rain | 92 days | 69.0 in (1753 mm) /yr |
| Snow | 2 days | 14.7 in (374 mm) /yr |
| Sky | 82 sunny | 29 stormy |
| Wind | 2.3 mph (1.0 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 (%)
54
Jan 71
Feb 84
Mar 60
Apr 64
May 55
Jun 43
Jul 57
Aug 53
Sep 63
Oct 87
Nov 87
Dec Humidity (%)
78
Jan 77
Feb 78
Mar 69
Apr 70
May 70
Jun 66
Jul 76
Aug 79
Sep 82
Oct 86
Nov 90
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 13 mi King County International Airport - Boeing Field (BFI)
Ski resort 33 mi Alpental Backcountry
National park 76 mi Mount Baker National Recreation Area
Mountain peak
(5,095 ft) 21 mi
Hospital 3 mi Swedish Hospital
Hiking trail 3 mi East Lake Sammamish Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 45°F 7°C | 32°F 0°C | 3.4 in 85 mm | 0.3 in8 mm | 8 |
| February | 46°F 8°C | 34°F 1°C | 5.9 in 151 mm | 10.9 in276 mm | 4 |
| March | 54°F 12°C | 41°F 5°C | 9.6 in 243 mm | 0.7 in17 mm | 1 |
| April | 61°F 16°C | 42°F 6°C | 4.4 in 111 mm | — | 8 |
| May | 65°F 19°C | 46°F 8°C | 3.6 in 92 mm | — | 6 |
| June | 71°F 22°C | 52°F 11°C | 1.0 in 26 mm | — | 10 |
| July | 78°F 25°C | 56°F 13°C | 0.4 in 10 mm | — | 16 |
| August | 76°F 24°C | 57°F 14°C | 4.5 in 114 mm | — | 10 |
| September | 72°F 22°C | 53°F 12°C | 1.6 in 40 mm | — | 10 |
| October | 58°F 15°C | 44°F 7°C | 7.1 in 181 mm | — | 8 |
| November | 53°F 12°C | 43°F 6°C | 11.2 in 283 mm | — | 0 |
| December | 49°F 9°C | 40°F 4°C | 16.4 in 417 mm | 2.9 in73 mm | 1 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 8 | 0 |
| February | 4 | 3 |
| March | 1 | 4 |
| April | 8 | 2 |
| May | 6 | 3 |
| June | 10 | 1 |
| July | 16 | 0 |
| August | 10 | 1 |
| September | 10 | 1 |
| October | 8 | 5 |
| November | 0 | 5 |
| December | 1 | 4 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 48°F 9°C | 42°F 5°C |
| February | 47°F 8°C | 39°F 4°C |
| March | 48°F 9°C | 41°F 5°C |
| April | 53°F 11°C | 47°F 8°C |
| May | 55°F 13°C | 55°F 13°C |
| June | 60°F 16°C | 63°F 17°C |
| July | 60°F 16°C | 69°F 20°C |
| August | 61°F 16°C | 70°F 21°C |
| September | 61°F 16°C | 68°F 20°C |
| October | 57°F 14°C | 56°F 13°C |
| November | 52°F 11°C | 50°F 10°C |
| December | 50°F 10°C | 46°F 8°C |