Castalia, IA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Castalia now
Loading the National Weather Service forecast…
Castalia weather by the hour
Castalia weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Castalia.
This week in Castalia
Sunrise, sunset and moon in Castalia
What is the weather usually like in Castalia?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 83°F average high
- Januarycoldest month · 7°F average low
- 38.9 inprecipitation per year · 989 mm
- 39.8 insnowfall per year · 101 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Castalia: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station POSTVILLE, IA US (USC00136766), adjusted for the elevation of Castalia.
Castalia weather month by month
Sunrise and sunset in Castalia through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:33 AM | 4:58 PM | 9 h 25 min |
| February | 7:02 AM | 5:39 PM | 10 h 36 min |
| March | 7:16 AM | 7:14 PM | 11 h 57 min |
| April | 6:22 AM | 7:50 PM | 13 h 28 min |
| May | 5:41 AM | 8:25 PM | 14 h 43 min |
| June | 5:24 AM | 8:49 PM | 15 h 24 min |
| July | 5:39 AM | 8:45 PM | 15 h 6 min |
| August | 6:11 AM | 8:10 PM | 13 h 59 min |
| September | 6:45 AM | 7:18 PM | 12 h 33 min |
| October | 7:19 AM | 6:25 PM | 11 h 6 min |
| November | 6:58 AM | 4:44 PM | 9 h 46 min |
| December | 7:29 AM | 4:34 PM | 9 h 4 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Castalia?
Castalia 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 38.9 inches (989 mm) of precipitation a year. The wettest month is June and the driest is January. Snow is common: about 40 inches fall in an average year.
The best time to visit Castalia is June to September. At 1,247 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 Castalia
Weather in towns near Castalia
Questions about the weather in Castalia
What is the hottest month in Castalia?
July, with an average high of 83°F (28°C).
What is the coldest month in Castalia?
January, with an average low of 7°F (-14°C).
How much does it rain in Castalia?
About 38.9 inches (989 mm) a year; the wettest month is June.
Does it snow in Castalia?
Yes, about 40 inches of snow fall in an average year.
When is the best time to visit Castalia?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Castalia have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Castalia in November?
Highs average 44°F and lows 25°F, with about 2.1 inches of precipitation.
What time is sunrise in Castalia?
Around 6:58 AM in mid-November, and sunset around 4:44 PM. Today’s exact times are shown above.
Where does this Castalia weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Castalia.
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