City of Sammamish, Washington Climate
United States
Pop. 45,780 Elev. 144 m / 472 ft
TZ: America/Los_Angeles (UTC-7) ·
City of Sammamish has mild summers with average highs of 78°F (26°C) in July, and cold winters averaging 32°F (0°C) in January. Rain falls on about 88 days per year (64.5 in / 1639 mm total), with snow on 1 days and 12 in (307 mm) of annual accumulation. The city averages 82 sunny days per year and around 25 thunderstorm days. Ocean water temperatures reach 61°F (16°C) in summer.
| Temperature | 78°F (26°C) high | 32°F (0°C) low |
| Feels like | 31°F (-1°C) low | |
| Rain | 88 days | 64.5 in (1639 mm) /yr |
| Snow | 1 days | 12.1 in (307 mm) /yr |
| Sky | 82 sunny | 25 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 72
Feb 84
Mar 60
Apr 63
May 54
Jun 42
Jul 56
Aug 54
Sep 62
Oct 85
Nov 86
Dec Humidity (%)
78
Jan 76
Feb 78
Mar 68
Apr 69
May 68
Jun 64
Jul 74
Aug 77
Sep 81
Oct 85
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 30 mi Alpental Backcountry
National park 78 mi Mount Baker National Recreation Area
Mountain peak
(4,967 ft) 19 mi Moolock Mountain
Hospital 4 mi Evergreen Endodontics - Tooth Pain & Dental Emergency Specialists
Hiking trail 2 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 | 3.3 in 85 mm | 0.4 in10 mm | 8 |
| February | 46°F 8°C | 34°F 1°C | 5.9 in 150 mm | 10.3 in262 mm | 5 |
| March | 55°F 13°C | 40°F 4°C | 8.9 in 226 mm | 0.9 in23 mm | 1 |
| April | 61°F 16°C | 42°F 5°C | 4.2 in 106 mm | — | 8 |
| May | 65°F 19°C | 46°F 8°C | 3.1 in 78 mm | — | 6 |
| June | 71°F 22°C | 51°F 11°C | 1.0 in 26 mm | — | 11 |
| July | 78°F 26°C | 56°F 13°C | 0.3 in 8 mm | — | 16 |
| August | 76°F 25°C | 57°F 14°C | 3.5 in 89 mm | — | 10 |
| September | 72°F 22°C | 53°F 12°C | 1.3 in 33 mm | — | 8 |
| October | 58°F 15°C | 44°F 6°C | 6.6 in 168 mm | — | 8 |
| November | 53°F 12°C | 43°F 6°C | 9.9 in 251 mm | — | 0 |
| December | 49°F 9°C | 39°F 4°C | 16.5 in 419 mm | 0.5 in12 mm | 1 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 8 | 0 |
| February | 5 | 3 |
| March | 1 | 3 |
| April | 8 | 3 |
| May | 6 | 2 |
| June | 11 | 1 |
| July | 16 | 0 |
| August | 10 | 0 |
| September | 8 | 1 |
| October | 8 | 5 |
| November | 0 | 3 |
| 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 |