Historical climate averages in Chicago for May
United States · 2024–2026 · 74 daily observations
A month-level reference built from observed daily highs, lows, and precipitation values. Use it to see how May fits into Chicago's annual pattern, then jump to nearby months below.
Average High
19.7°C
Average Low
10.1°C
Record High
32.2°C
Record Low
2.0°C
Average Daily Precipitation
2.7mm
Data Coverage
2024–2026 (74 obs)
May in context
May in Chicago is the 5th warmest month by average daytime high. Average highs reach 19.7°C and average lows settle near 10.1°C.
the 6th wettest month by average daily precipitation. Average daily precipitation is 2.7mm, versus 4.4mm in July, the wettest month.
This snapshot is built from 74 daily observations collected between 2024 and 2026. Record highs and lows mark the single hottest and coldest daily readings in the archive for this month.
Relative to the full year
- Daytime highs: +4.4°C vs city-wide monthly average
- Nighttime lows: +2.9°C vs city-wide monthly average
- Daily precipitation: +0.0mm vs city-wide monthly average
Archive quality
- Coverage: 2024–2026 (74 obs)
- Temperature span: 30.2°C between record low and high
- Driest month benchmark: February at 0.6mm
How this summary is calculated
PastWeather groups all recorded days for May, then calculates the average daytime high, average nighttime low, and average daily precipitation value for that month. The cards above stay tied to observed data rather than travel copy or generic climate descriptions.
Average high / low
Mean daily maximum and minimum temperatures across every recorded May day in the archive.
Record extremes
The single hottest and coldest daily readings observed during this month, useful for understanding outlier risk.
Precipitation note
Precipitation is shown as an average daily value for this month, which helps compare wetter and drier parts of the year on the same basis.
Explore another month
Move month by month or jump straight to the warmest, coldest, or wettest part of the year for Chicago.