River Sioux, IA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in River Sioux now
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River Sioux weather by the hour
River Sioux weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of River Sioux.
This week in River Sioux
Sunrise, sunset and moon in River Sioux
What is the weather usually like in River Sioux?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 86°F average high
- Januarycoldest month · 9°F average low
- 39.8 inprecipitation per year · 1,010 mm
- 45.6 insnowfall per year · 116 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit River Sioux: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station LITTLE SIOUX 2 NW, IA US (USC00134874), adjusted for the elevation of River Sioux.
River Sioux weather month by month
Sunrise and sunset in River Sioux through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:47 AM | 5:20 PM | 9 h 32 min |
| February | 7:17 AM | 5:58 PM | 10 h 41 min |
| March | 7:33 AM | 7:32 PM | 11 h 58 min |
| April | 6:41 AM | 8:06 PM | 13 h 24 min |
| May | 6:02 AM | 8:38 PM | 14 h 36 min |
| June | 5:47 AM | 9:02 PM | 15 h 15 min |
| July | 6:01 AM | 8:59 PM | 14 h 57 min |
| August | 6:31 AM | 8:25 PM | 13 h 54 min |
| September | 7:03 AM | 7:35 PM | 12 h 31 min |
| October | 7:35 AM | 6:44 PM | 11 h 8 min |
| November | 7:12 AM | 5:05 PM | 9 h 52 min |
| December | 7:43 AM | 4:55 PM | 9 h 12 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in River Sioux?
River Sioux has a hot-summer humid continental climate. The warmest month is July, with an average high of 86°F (30°C), and the coldest is January, with average lows of 9°F (-13°C).
It gets about 39.8 inches (1,010 mm) of precipitation a year. The wettest month is June and the driest is January. Snow is common: about 46 inches fall in an average year.
The best time to visit River Sioux is May–June and August–September. At 1,037 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 River Sioux
Weather in towns near River Sioux
Questions about the weather in River Sioux
What is the hottest month in River Sioux?
July, with an average high of 86°F (30°C).
What is the coldest month in River Sioux?
January, with an average low of 9°F (-13°C).
How much does it rain in River Sioux?
About 39.8 inches (1,010 mm) a year; the wettest month is June.
Does it snow in River Sioux?
Yes, about 46 inches of snow fall in an average year.
When is the best time to visit River Sioux?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does River Sioux have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in River Sioux in November?
Highs average 48°F and lows 24°F, with about 1.7 inches of precipitation.
What time is sunrise in River Sioux?
Around 7:12 AM in mid-November, and sunset around 5:05 PM. Today’s exact times are shown above.
Where does this River Sioux weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of River Sioux.
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