Monthly Climate
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Best time to visit Milwaukee

September is the best time to visit Milwaukee for general sightseeing, with average highs of 22 °C and about 9 wet days. The comfortable season runs roughly June to September.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking September comfort 88/100
The least cloud September 49 % average cloud cover
The least rain February 48 mm
Warmth July 26 °C
Cooler weather January -1.4 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 September 88 22 °C 9
2 June 85 22 °C 11
3 August 80 25 °C 10
4 July 79 26 °C 10
5 October 69 15 °C 9
6 May 67 16 °C 11
7 November 38 7.3 °C 8
8 April 38 8.8 °C 12
9 February 29 -0.5 °C 7
10 March 27 3.5 °C 9
11 December 26 1.6 °C 9
12 January 26 -1.4 °C 9

When to think twice

January scores lowest with about 9 wet days and highs near -1.4 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January -1.4 °C 50 mm 70 %
February -0.5 °C 48 mm 65 %
March 3.5 °C 60 mm 63 %
April 8.8 °C 102 mm 63 %
May 15.6 °C 93 mm 61 %
June 22.0 °C 94 mm 56 %
July 25.9 °C 82 mm 50 %
August 25.3 °C 93 mm 50 %
September 21.6 °C 74 mm 49 %
October 14.6 °C 79 mm 58 %
November 7.3 °C 60 mm 64 %
December 1.6 °C 56 mm 70 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.