Wheaton Muni climate by month

Averages and records for each calendar month at Wheaton Muni, United States, from 1914 to 2026. The warmest month is July, averaging 29.4°C; the coolest is January at −6.4°C.

Average and record high and low temperature for each calendar month at Wheaton Muni, with the number of years behind each figure.
Month	Avg high	Avg low	Record high	Record low	Years
January	−6.4°C	−17.2°C	16.1°C24 January 1981	−38.9°C13 January 1916	106 / 109
February	−3.3°C	−14.6°C	18.9°C2 February 1991	−37.2°C16 February 1936	110 / 110
March	3.8°C	−7.1°C	28.9°C31 March 1963	−34.4°C11 March 1948	110 / 110
April	13.4°C	0.5°C	36.7°C21 April 1980	−21.7°C1 April 1924	109 / 110
May	21.3°C	7.3°C	41.1°C31 May 1934	−10.0°C6 May 1925	108 / 109
June	26.2°C	13.2°C	41.1°C28 June 1931	−0.6°C9 June 1915	112 / 112
July	29.4°C	15.8°C	45.0°C16 July 1936	3.9°C3 July 1972	112 / 113
August	28.4°C	14.4°C	42.8°C10 August 1947	−0.6°C30 August 1931	113 / 113
September	23.4°C	9.3°C	42.2°C10 September 1931	−7.8°C29 September 1939	111 / 113
October	15.8°C	2.6°C	35.6°C5 October 1963	−20.0°C26 October 1919	111 / 111
November	5.0°C	−5.5°C	27.2°C1 November 1950	−27.2°C24 November 1951	108 / 109
December	−3.4°C	−13.3°C	23.3°C9 December 1939	−36.7°C21 December 1916	109 / 109

Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 106 to 113 years each.

Hottest on record45.0°C16 July 1936Source: NOAA GHCN-Daily

Coldest on record−38.9°C13 January 1916Source: NOAA GHCN-Daily

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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.

Wheaton Muni climate by month

Averages and records for each calendar month at Wheaton Muni, United States, from 1914 to 2026. The warmest month is July, averaging 29.4°C; the coolest is January at −6.4°C.

Average and record high and low temperature for each calendar month at Wheaton Muni, with the number of years behind each figure.
Month	Avg high	Avg low	Record high	Record low	Years
January	−6.4°C	−17.2°C	16.1°C24 January 1981	−38.9°C13 January 1916	106 / 109
February	−3.3°C	−14.6°C	18.9°C2 February 1991	−37.2°C16 February 1936	110 / 110
March	3.8°C	−7.1°C	28.9°C31 March 1963	−34.4°C11 March 1948	110 / 110
April	13.4°C	0.5°C	36.7°C21 April 1980	−21.7°C1 April 1924	109 / 110
May	21.3°C	7.3°C	41.1°C31 May 1934	−10.0°C6 May 1925	108 / 109
June	26.2°C	13.2°C	41.1°C28 June 1931	−0.6°C9 June 1915	112 / 112
July	29.4°C	15.8°C	45.0°C16 July 1936	3.9°C3 July 1972	112 / 113
August	28.4°C	14.4°C	42.8°C10 August 1947	−0.6°C30 August 1931	113 / 113
September	23.4°C	9.3°C	42.2°C10 September 1931	−7.8°C29 September 1939	111 / 113
October	15.8°C	2.6°C	35.6°C5 October 1963	−20.0°C26 October 1919	111 / 111
November	5.0°C	−5.5°C	27.2°C1 November 1950	−27.2°C24 November 1951	108 / 109
December	−3.4°C	−13.3°C	23.3°C9 December 1939	−36.7°C21 December 1916	109 / 109

Hottest on record45.0°C16 July 1936Source: NOAA GHCN-Daily

Coldest on record−38.9°C13 January 1916Source: NOAA GHCN-Daily