Climate averages 1991–2020

Saint Joseph weather
in May.

A warm, wet month: the 5th warmest and the wettest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 22.8°C Daytime mean, May
Average low 13.2°C Night-time mean, May
Rainfall 143 mm 13 days with ≥1 mm
Daylight 14 h Sunrise to sunset, per day
Every month in Saint Joseph · average highYear overview

May is a warm month in Saint Joseph: daytime highs average 22.8°C and nights cool to about 13.2°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 143 mm of rain on roughly 13 days, which makes May a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 21 min on an average May day.

The nearest other city in this atlas is Kansas City (78 km away). In May its highs average 23.3°C, 0.5°C warmer than Saint Joseph, with 143 mm of rain.

Among the 498 cities listed in the United States, Saint Joseph ranks 272nd of 498 for the warmest May highs and joint 487th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Saint Joseph is 1.0°C cooler than that mean.

From May to June, average highs rise by 5.3°C to 28.1°C, and monthly rainfall falls from 143 mm to 114 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. -10-505101520253035 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 1500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Saint Joseph climate table

1991–2020
Monthly climate averages for Saint Joseph, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 2.1°C-6.8°C-6.8°C305.49.710 h
February 4.9°C-4.9°C-4.9°C446.210.711 h
March 11.3°C0.9°C0.9°C769.011.912 h
April 17.3°C7.0°C7.0°C11511.113.213 h
May, selected 22.8°C13.2°C13.2°C14312.514.314 h
June 28.1°C18.8°C18.8°C11411.114.915 h
July 30.3°C21.3°C21.3°C1129.114.715 h
August 29.4°C20.4°C20.4°C919.013.714 h
September 25.2°C15.7°C15.7°C858.212.512 h
October 18.3°C9.1°C9.1°C817.911.211 h
November 10.7°C2.1°C2.1°C546.410.010 h
December 4.4°C-4.0°C-4.0°C455.49.49 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

May in nearby cities

Distance from Saint Joseph

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Saint Joseph) is explained once on the Saint Joseph year overview and on the Sources, method and limits page.