Mason City Climate: Weather by Month and Best Time to Visit

Best months for Mason City: September, July, August.

Best time to visit

Year at a glance

Jan 4.2 Feb 4.3 Mar 5.1 Apr 6.3 May 6.9 Jun 7.2 Jul 7.7 Aug 7.6 Sep 7.9 Oct 7.0 Nov 5.4 Dec 4.2

Weather by month

Month	Avg high	Avg low	Rainfall	Rainy days	Humidity	Sunshine	Score
January	-4°C	-12°C	29 mm	7	–	–	4.2
February	-1°C	-10°C	32 mm	6	–	–	4.3
March	6°C	-3°C	61 mm	8	–	–	5.1
April	15°C	3°C	101 mm	11	–	–	6.3
May	21°C	10°C	130 mm	14	–	–	6.9
June	26°C	16°C	137 mm	12	–	–	7.2
July	27°C	18°C	102 mm	10	–	–	7.7
August	26°C	16°C	100 mm	10	–	–	7.6
September	23°C	12°C	90 mm	9	–	–	7.9
October	16°C	5°C	68 mm	8	–	–	7.0
November	7°C	-2°C	49 mm	7	–	–	5.4
December	-1°C	-9°C	37 mm	7	–	–	4.2