ClimateAverages

Saint Joseph Climate

Missouri, United States of America · population 76,780 · 288 weather stations within 200 km · records 1819 to 2025

Average annual daytime high
17.6°C
Warmest month · July
31.3°C
Typical daytime high
Coldest month · January
-9.8°C
Typical overnight low

Saint Joseph has an average annual daytime high of 17.6°C, based on the 1951 to 1980 baseline. Its warmest month is July, when highs typically reach 31.3°C, and its coldest is January, with overnight lows near -9.8°C.

Month by month averages

MonthAvg highAvg low
January1.1°C-9.8°CColdest
February4.9°C-6.6°C
March10.6°C-1.6°C
April18.5°C5.4°C
May23.9°C11.3°C
June28.6°C16.4°C
July31.3°C18.8°CWarmest
August30.4°C17.8°C
September26.1°C12.9°C
October20.1°C6.5°C
November11.3°C-0.5°C
December4.3°C-6.2°C

Temperature range across the year

-12°-1°11°22°33°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2011
+2.9°C vs. 1951–1980
Coldest year on record
1842
-3.2°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Saint Joseph getting hotter?

Since 1900, Saint Joseph's average temperature has risen by +2.0°C. Compared to the earliest station records that begin in 1819, warming totals +1.7°C.

10.8°11.4°12.0°12.7°13.3°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
April to October

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Saint Joseph?

Saint Joseph's average annual daytime high is 17.6°C, based on the 1951 to 1980 baseline period. The warmest month is July, with highs averaging 31.3°C, and the coldest is January, with lows averaging -9.8°C.

What is the warmest month in Saint Joseph?

July is the warmest month in Saint Joseph, with typical daytime highs of 31.3°C.

What is the hottest year on record for Saint Joseph?

2011 is the hottest year on record for Saint Joseph, running +2.9°C above the 1951 to 1980 baseline.

Is Saint Joseph getting hotter?

Yes. Since 1900, Saint Joseph has warmed by roughly +2.0°C.

When is the best time to visit Saint Joseph?

April to October typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Nearby cities

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.