Delta, IA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Delta now
Loading the National Weather Service forecast…
Delta weather by the hour
Delta weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Delta.
This week in Delta
Sunrise, sunset and moon in Delta
What is the weather usually like in Delta?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 84°F average high
- Januarycoldest month · 11°F average low
- 37.4 inprecipitation per year · 950 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Delta: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SIGOURNEY, IA US (USC00137678), adjusted for the elevation of Delta.
Delta weather month by month
Sunrise and sunset in Delta through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:31 AM | 5:06 PM | 9 h 35 min |
| February | 7:02 AM | 5:44 PM | 10 h 42 min |
| March | 7:19 AM | 7:17 PM | 11 h 58 min |
| April | 6:27 AM | 7:50 PM | 13 h 23 min |
| May | 5:48 AM | 8:22 PM | 14 h 33 min |
| June | 5:33 AM | 8:45 PM | 15 h 12 min |
| July | 5:47 AM | 8:42 PM | 14 h 54 min |
| August | 6:17 AM | 8:10 PM | 13 h 52 min |
| September | 6:48 AM | 7:20 PM | 12 h 31 min |
| October | 7:20 AM | 6:30 PM | 11 h 9 min |
| November | 6:56 AM | 4:51 PM | 9 h 55 min |
| December | 7:26 AM | 4:42 PM | 9 h 15 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Delta?
Delta has a hot-summer humid continental climate. The warmest month is July, with an average high of 84°F (29°C), and the coldest is January, with average lows of 11°F (-12°C).
It gets about 37.4 inches (950 mm) of precipitation a year. The wettest month is June and the driest is January.
The best time to visit Delta is June to September. At 801 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 Delta
Weather in towns near Delta
Questions about the weather in Delta
What is the hottest month in Delta?
July, with an average high of 84°F (29°C).
What is the coldest month in Delta?
January, with an average low of 11°F (-12°C).
How much does it rain in Delta?
About 37.4 inches (950 mm) a year; the wettest month is June.
Does it snow in Delta?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Delta?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Delta have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Delta in November?
Highs average 48°F and lows 28°F, with about 2.2 inches of precipitation.
What time is sunrise in Delta?
Around 6:56 AM in mid-November, and sunset around 4:51 PM. Today’s exact times are shown above.
Where does this Delta weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Delta.
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