Historical weather data, all-time temperature records, and monthly climate averages for Kirkwood, MO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Kirkwood typically lands right in the middle of that classic spring swing — average highs of 60° with lows still dipping to 40°. The date's 66-degree spread between all-time extremes (86° in 2023 vs. 20° in 1987) tells you everything about Missouri springs. Rain is a modest possibility at 28%, and snow is essentially off the table.
Kirkwood's weather has real teeth on both ends — a scorching 106° in July 1980 and a brutal -20° in December 1989 represent a 126-degree swing in the historical record. A single day in July 2022 dumped 7.15 inches of rain, and a February 1982 snowstorm buried the area under 12 inches.
Summers run hot, with the peak week of July 16–22 averaging a high of 90°, while mid-January is the coldest stretch at just 38°. If you're looking to avoid rain, skip mid-May — it's the wettest week of the year with over an inch of precipitation on average. The shoulder months of April and October offer the most comfortable conditions, with highs in the upper 60s.