Sammamish Weather History Washington, United States of America

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Daily and hourly data from 1 Jan 2009 onwards.
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Sun 13 Sep, 2026 Weather in Sammamish

Sunrise: 06:43 AM Sunset: 07:25 PM	Moonrise: 09:57 AM Moonset: 08:06 PM	Max: 13.6 °c	Min: 10.7 °c	Avg: 12.2 °c	Precip: 24.00 mm	Max Wind: 12.2 kph

	Sun 13 0:00 am	Sun 13 3:00 am	Sun 13 6:00 am	Sun 13 9:00 am	Sun 13 12:00 pm	Sun 13 3:00 pm	Sun 13 6:00 pm	Sun 13 9:00 pm
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Temp	13.5°c	12.0°c	10.9°c	11.3°c	12.5°c	13.2°c	13.4°c	12.8°c
Wind	7.9 kmph	6.1 kmph	6.5 kmph	10.8 kmph	8.3 kmph	8.3 kmph	7.2 kmph	10.7 kmph
Precip	1.70 mm	0.60 mm	1.30 mm	2.90 mm	0.70 mm	0.40 mm	0.20 mm	0.00 mm
Cloud	100%	100%	100%	100%	100%	100%	100%	100%
Humidity	81%	96%	99%	98%	98%	97%	95%	95%
Pressure	1012 mb	1013 mb	1013 mb	1013 mb	1015 mb	1016 mb	1016 mb	1018 mb

Sammamish Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	7°C / 45°F	2°C / 36°F	4°C / 40°F	113 hours	183.54 mm / 7.23 In	13 days	1019 mb / 31 In
February	8°C / 46°F	2°C / 35°F	4°C / 40°F	88 hours	132.15 mm / 5.20 In	11 days	1018 mb / 31 In
March	11°C / 51°F	3°C / 37°F	6°C / 43°F	99 hours	165.99 mm / 6.54 In	13 days	1016 mb / 30 In
April	14°C / 57°F	5°C / 40°F	9°C / 48°F	116 hours	115.86 mm / 4.56 In	10 days	1017 mb / 31 In
May	18°C / 65°F	8°C / 46°F	13°C / 55°F	157 hours	83.02 mm / 3.27 In	7 days	1017 mb / 30 In
June	21°C / 70°F	10°C / 51°F	16°C / 60°F	170 hours	66.30 mm / 2.61 In	5 days	1016 mb / 30 In
July	26°C / 78°F	13°C / 55°F	19°C / 67°F	241 hours	20.19 mm / 0.79 In	2 days	1017 mb / 31 In
August	26°C / 78°F	14°C / 57°F	19°C / 67°F	246 hours	35.94 mm / 1.41 In	3 days	1016 mb / 30 In
September	22°C / 71°F	11°C / 52°F	16°C / 61°F	204 hours	76.73 mm / 3.02 In	6 days	1016 mb / 30 In
October	15°C / 60°F	8°C / 46°F	11°C / 52°F	159 hours	155.49 mm / 6.12 In	10 days	1017 mb / 31 In
November	10°C / 50°F	4°C / 39°F	7°C / 44°F	104 hours	225.24 mm / 8.87 In	13 days	1017 mb / 31 In
December	7°C / 44°F	2°C / 35°F	4°C / 39°F	97 hours	210.25 mm / 8.28 In	13 days	1018 mb / 31 In

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