Sumner, IA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Sumner now
Loading the National Weather Service forecast…
Sumner weather by the hour
Sumner weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Sumner.
This week in Sumner
Sunrise, sunset and moon in Sumner
What is the weather usually like in Sumner?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 83°F average high
- Januarycoldest month · 7°F average low
- 38.6 inprecipitation per year · 982 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Sumner: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station TRIPOLI, IA US (USC00138339), adjusted for the elevation of Sumner.
Sumner weather month by month
Sunrise and sunset in Sumner through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:34 AM | 5:01 PM | 9 h 26 min |
| February | 7:03 AM | 5:41 PM | 10 h 37 min |
| March | 7:18 AM | 7:16 PM | 11 h 57 min |
| April | 6:24 AM | 7:52 PM | 13 h 27 min |
| May | 5:43 AM | 8:25 PM | 14 h 42 min |
| June | 5:27 AM | 8:50 PM | 15 h 22 min |
| July | 5:42 AM | 8:46 PM | 15 h 4 min |
| August | 6:13 AM | 8:12 PM | 13 h 58 min |
| September | 6:47 AM | 7:19 PM | 12 h 32 min |
| October | 7:20 AM | 6:27 PM | 11 h 6 min |
| November | 6:59 AM | 4:46 PM | 9 h 47 min |
| December | 7:30 AM | 4:36 PM | 9 h 5 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Sumner?
Sumner has a hot-summer humid continental climate. The warmest month is July, with an average high of 83°F (28°C), and the coldest is January, with average lows of 7°F (-14°C).
It gets about 38.6 inches (982 mm) of precipitation a year. The wettest month is June and the driest is February.
The best time to visit Sumner is June to September. At 1,060 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 Sumner
Weather in towns near Sumner
Questions about the weather in Sumner
What is the hottest month in Sumner?
July, with an average high of 83°F (28°C).
What is the coldest month in Sumner?
January, with an average low of 7°F (-14°C).
How much does it rain in Sumner?
About 38.6 inches (982 mm) a year; the wettest month is June.
Does it snow in Sumner?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Sumner?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Sumner have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Sumner in November?
Highs average 44°F and lows 26°F, with about 2.0 inches of precipitation.
What time is sunrise in Sumner?
Around 6:59 AM in mid-November, and sunset around 4:46 PM. Today’s exact times are shown above.
Where does this Sumner weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Sumner.
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