Arnold, MO weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Arnold now
Loading the National Weather Service forecast…
Arnold weather by the hour
Arnold weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Arnold.
This week in Arnold
Sunrise, sunset and moon in Arnold
What is the weather usually like in Arnold?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 88°F average high
- Januarycoldest month · 22°F average low
- 43.6 inprecipitation per year · 1,107 mm
- 9.2 insnowfall per year · 23 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Arnold: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station FESTUS, MO US (USC00232850), adjusted for the elevation of Arnold.
Arnold weather month by month
Sunrise and sunset in Arnold through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:15 AM | 5:06 PM | 9 h 50 min |
| February | 6:50 AM | 5:40 PM | 10 h 50 min |
| March | 7:10 AM | 7:09 PM | 11 h 59 min |
| April | 6:23 AM | 7:39 PM | 13 h 15 min |
| May | 5:48 AM | 8:07 PM | 14 h 19 min |
| June | 5:35 AM | 8:28 PM | 14 h 53 min |
| July | 5:48 AM | 8:26 PM | 14 h 37 min |
| August | 6:14 AM | 7:57 PM | 13 h 42 min |
| September | 6:42 AM | 7:11 PM | 12 h 29 min |
| October | 7:09 AM | 6:24 PM | 11 h 15 min |
| November | 6:41 AM | 4:50 PM | 10 h 8 min |
| December | 7:10 AM | 4:43 PM | 9 h 33 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Arnold?
Arnold has a hot-summer humid continental climate. The warmest month is July, with an average high of 88°F (31°C), and the coldest is January, with average lows of 22°F (-5°C).
It gets about 43.6 inches (1,107 mm) of precipitation a year. The wettest month is April and the driest is February. Snow is common: about 9 inches fall in an average year.
The best time to visit Arnold is May–June and September–October. At 604 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 Arnold
Weather in towns near Arnold
Questions about the weather in Arnold
What is the hottest month in Arnold?
July, with an average high of 88°F (31°C).
What is the coldest month in Arnold?
January, with an average low of 22°F (-5°C).
How much does it rain in Arnold?
About 43.6 inches (1,107 mm) a year; the wettest month is April.
Does it snow in Arnold?
Yes, about 9 inches of snow fall in an average year.
When is the best time to visit Arnold?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Arnold have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Arnold in November?
Highs average 56°F and lows 35°F, with about 3.5 inches of precipitation.
What time is sunrise in Arnold?
Around 6:41 AM in mid-November, and sunset around 4:50 PM. Today’s exact times are shown above.
Where does this Arnold weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Arnold.
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