St. Clair, MO weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in St. Clair now
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St. Clair weather by the hour
St. Clair weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of St. Clair.
This week in St. Clair
Sunrise, sunset and moon in St. Clair
What is the weather usually like in St. Clair?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 90°F average high
- Januarycoldest month · 22°F average low
- 45.0 inprecipitation per year · 1,142 mm
- 14.4 insnowfall per year · 37 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit St. Clair: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station UNION, MO US (USC00238515), adjusted for the elevation of St. Clair.
St. Clair weather month by month
Sunrise and sunset in St. Clair through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:17 AM | 5:09 PM | 9 h 51 min |
| February | 6:52 AM | 5:43 PM | 10 h 50 min |
| March | 7:13 AM | 7:12 PM | 11 h 59 min |
| April | 6:26 AM | 7:41 PM | 13 h 15 min |
| May | 5:50 AM | 8:09 PM | 14 h 18 min |
| June | 5:38 AM | 8:30 PM | 14 h 52 min |
| July | 5:51 AM | 8:28 PM | 14 h 37 min |
| August | 6:17 AM | 7:59 PM | 13 h 41 min |
| September | 6:44 AM | 7:13 PM | 12 h 29 min |
| October | 7:11 AM | 6:27 PM | 11 h 15 min |
| November | 6:44 AM | 4:52 PM | 10 h 8 min |
| December | 7:12 AM | 4:46 PM | 9 h 33 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in St. Clair?
St. Clair has a humid subtropical climate. The warmest month is July, with an average high of 90°F (32°C), and the coldest is January, with average lows of 22°F (-6°C).
It gets about 45.0 inches (1,142 mm) of precipitation a year. The wettest month is April and the driest is February. Snow is common: about 14 inches fall in an average year.
The best time to visit St. Clair is May–June and September–October. At 774 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about St. Clair
Weather in towns near St. Clair
Questions about the weather in St. Clair
What is the hottest month in St. Clair?
July, with an average high of 90°F (32°C).
What is the coldest month in St. Clair?
January, with an average low of 22°F (-6°C).
How much does it rain in St. Clair?
About 45.0 inches (1,142 mm) a year; the wettest month is April.
Does it snow in St. Clair?
Yes, about 14 inches of snow fall in an average year.
When is the best time to visit St. Clair?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does St. Clair have?
Humid subtropical (Köppen Cfa).
What is the weather like in St. Clair in November?
Highs average 56°F and lows 34°F, with about 3.7 inches of precipitation.
What time is sunrise in St. Clair?
Around 6:44 AM in mid-November, and sunset around 4:52 PM. Today’s exact times are shown above.
Where does this St. Clair weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of St. Clair.
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