Saint Joseph, Missouri Climate by Month
Saint Joseph, Missouri, United States
Hot summers and cold winters, with rain spread through the year.
The climate in Saint Joseph is one of hot summers and cold winters, with rain spread through the year. Afternoon highs range from 38°F (4°C) in January to 89°F (32°C) in July, and January nights average 19°F (-7°C). About 34 in (867 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 89°F(32°C)
- Average high, July
- Coldest nights
- 19°F(-7°C)
- Average low, January
- Rain per year
- 34 in(867 mm)
- No clear rainy season
- Humidity
- 66%
- Sunniest: July
Best and worst months in Saint Joseph
Best for weatherThe most comfortable weather comes in May, September and October, with highs around 75°F (24°C) and about 3.8 in (96 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 38°F (4°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Saint Joseph weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(4°C) | 19°F(-7°C) | 0.9 in(23 mm) | 75% | 1.9 |
| FebFebruary | 44°F(7°C) | 23°F(-5°C) | 1.1 in(28 mm) | 62% | 2.8 |
| MarMarch | 56°F(13°C) | 33°F(1°C) | 2.2 in(57 mm) | 60% | 3.9 |
| AprApril | 67°F(19°C) | 44°F(7°C) | 3.1 in(78 mm) | 60% | 4.6 |
| MayMayBest | 76°F(25°C) | 55°F(13°C) | 4.8 in(122 mm) | 65% | 5.6 |
| JunJune | 85°F(30°C) | 64°F(18°C) | 4.3 in(109 mm) | 68% | 6.2 |
| JulJuly | 89°F(32°C) | 68°F(20°C) | 4.0 in(102 mm) | 69% | 6.3 |
| AugAugust | 88°F(31°C) | 66°F(19°C) | 4.1 in(105 mm) | 70% | 5.6 |
| SepSeptemberBest | 80°F(27°C) | 57°F(14°C) | 3.8 in(96 mm) | 67% | 4.8 |
| OctOctoberBest | 68°F(20°C) | 45°F(7°C) | 2.8 in(71 mm) | 64% | 3.2 |
| NovNovember | 53°F(12°C) | 33°F(0°C) | 1.6 in(40 mm) | 64% | 2.1 |
| DecDecember | 41°F(5°C) | 23°F(-5°C) | 1.4 in(36 mm) | 65% | 1.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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