Grafton, IL weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Grafton now
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Grafton weather by the hour
Grafton weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Grafton.
This week in Grafton
Sunrise, sunset and moon in Grafton
What is the weather usually like in Grafton?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 89°F average high
- Januarycoldest month · 22°F average low
- 39.4 inprecipitation per year · 1,001 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Grafton: May and August to October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station ST CHARLES CO AP, MO US (USW00053904), adjusted for the elevation of Grafton.
Grafton weather month by month
Sunrise and sunset in Grafton through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:17 AM | 5:05 PM | 9 h 47 min |
| February | 6:51 AM | 5:40 PM | 10 h 49 min |
| March | 7:11 AM | 7:09 PM | 11 h 58 min |
| April | 6:23 AM | 7:40 PM | 13 h 17 min |
| May | 5:47 AM | 8:09 PM | 14 h 21 min |
| June | 5:34 AM | 8:30 PM | 14 h 56 min |
| July | 5:47 AM | 8:28 PM | 14 h 40 min |
| August | 6:14 AM | 7:58 PM | 13 h 44 min |
| September | 6:42 AM | 7:11 PM | 12 h 29 min |
| October | 7:10 AM | 6:24 PM | 11 h 14 min |
| November | 6:43 AM | 4:49 PM | 10 h 5 min |
| December | 7:11 AM | 4:41 PM | 9 h 30 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Grafton?
Grafton has a hot-summer humid continental climate. The warmest month is July, with an average high of 89°F (32°C), and the coldest is January, with average lows of 22°F (-6°C).
It gets about 39.4 inches (1,001 mm) of precipitation a year. The wettest month is May and the driest is February.
The best time to visit Grafton is May and August to October. At 433 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 Grafton
Weather in towns near Grafton
Questions about the weather in Grafton
What is the hottest month in Grafton?
July, with an average high of 89°F (32°C).
What is the coldest month in Grafton?
January, with an average low of 22°F (-6°C).
How much does it rain in Grafton?
About 39.4 inches (1,001 mm) a year; the wettest month is May.
Does it snow in Grafton?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Grafton?
May and August to October, when temperatures are most pleasant and rainy days are fewer.
What climate does Grafton have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Grafton in November?
Highs average 55°F and lows 35°F, with about 3.1 inches of precipitation.
What time is sunrise in Grafton?
Around 6:43 AM in mid-November, and sunset around 4:49 PM. Today’s exact times are shown above.
Where does this Grafton weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Grafton.
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