Washington Climate: Weather by Month and Best Time to Visit

Best months for Washington: September, October, May, June.

Best time to visit

Year at a glance

Jan 5.1 Feb 5.5 Mar 6.2 Apr 7.3 May 7.5 Jun 7.5 Jul 6.7 Aug 7.3 Sep 7.7 Oct 7.7 Nov 6.7 Dec 5.5

Weather by month

Month	Avg high	Avg low	Rainfall	Rainy days	Humidity	Sunshine	Score
January	6°C	-2°C	79 mm	9	–	–	5.1
February	8°C	-1°C	73 mm	9	–	–	5.5
March	13°C	3°C	99 mm	10	–	–	6.2
April	19°C	8°C	87 mm	10	–	–	7.3
May	24°C	14°C	95 mm	11	–	–	7.5
June	29°C	19°C	90 mm	12	–	–	7.5
July	31°C	21°C	103 mm	12	–	–	6.7
August	30°C	20°C	89 mm	11	–	–	7.3
September	26°C	17°C	109 mm	10	–	–	7.7
October	20°C	10°C	87 mm	8	–	–	7.7
November	14°C	4°C	74 mm	8	–	–	6.7
December	8°C	0°C	90 mm	9	–	–	5.5