Grafton, IA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Grafton now
Loading the National Weather Service forecast…
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 · 78°F average high
- Januarycoldest month · 4°F average low
- 35.5 inprecipitation per year · 901 mm
- 40.2 insnowfall per year · 102 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Grafton: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station NORTHWOOD, IA US (USC00136103), adjusted for the elevation of Grafton.
Grafton weather month by month
Sunrise and sunset in Grafton through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:39 AM | 5:03 PM | 9 h 23 min |
| February | 7:08 AM | 5:44 PM | 10 h 36 min |
| March | 7:22 AM | 7:19 PM | 11 h 57 min |
| April | 6:27 AM | 7:56 PM | 13 h 28 min |
| May | 5:46 AM | 8:31 PM | 14 h 45 min |
| June | 5:29 AM | 8:56 PM | 15 h 26 min |
| July | 5:44 AM | 8:52 PM | 15 h 7 min |
| August | 6:16 AM | 8:17 PM | 14 h 0 min |
| September | 6:50 AM | 7:24 PM | 12 h 33 min |
| October | 7:25 AM | 6:30 PM | 11 h 5 min |
| November | 7:04 AM | 4:49 PM | 9 h 45 min |
| December | 7:36 AM | 4:38 PM | 9 h 2 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Grafton?
Grafton has a warm-summer humid continental climate. The warmest month is July, with an average high of 78°F (26°C), and the coldest is January, with average lows of 4°F (-16°C).
It gets about 35.5 inches (901 mm) of precipitation a year. The wettest month is June and the driest is February. Snow is common: about 40 inches fall in an average year.
The best time to visit Grafton is June to September. At 1,230 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 78°F (26°C).
What is the coldest month in Grafton?
January, with an average low of 4°F (-16°C).
How much does it rain in Grafton?
About 35.5 inches (901 mm) a year; the wettest month is June.
Does it snow in Grafton?
Yes, about 40 inches of snow fall in an average year.
When is the best time to visit Grafton?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Grafton have?
Warm-summer humid continental (Köppen Dfb).
What is the weather like in Grafton in November?
Highs average 41°F and lows 22°F, with about 1.7 inches of precipitation.
What time is sunrise in Grafton?
Around 7:04 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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