Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Best months: August, July, June
Across the year, average daytime temperatures are around 18°C, sunshine averages 7.5h per day, and rainfall totals about 916mm.

Annual averages
Temp
18°C
Rain
916mm
Annual total
Sun
7.5h
Weather score
53
Mixed avg
Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Showers
Rainfall averages 112mm, so some wet days are possible.
Bright
Sunshine averages 9.4h per day, so bright days are a strong part of the month.
Map
Compare St Joseph, Missouri, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
August30°C average high
August is one of St Joseph's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
August112mm average rain
August is one of St Joseph's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to February and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
August9.4 hours average sun
August is brighter than St Joseph's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
August81 weather score
August is one of St Joseph's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.