Grafton, NE climate
Grafton has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 15°, and about 21 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Grafton feels like
Winter
Spring
Summer
Fall
Grafton weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 35° | 15° | 0.6" | 5.0" | 4 | 12 | 18° – 39° |
| February | 40° | 19° | 0.7" | 6.7" | 4 | 9 | 19° – 38° |
| March | 52° | 29° | 1.4" | 2.4" | 6 | 2 | 33° – 54° |
| April | 63° | 39° | 2.5" | 0.7" | 7 | 0 | 43° – 57° |
| May | 73° | 50° | 4.8" | 0 | 10 | 0 | 55° – 68° |
| June | 84° | 61° | 4.0" | 0 | 9 | 0 | 68° – 77° |
| July | 87° | 65° | 3.8" | 0 | 8 | 0 | 71° – 80° |
| August | 85° | 63° | 3.7" | 0 | 7 | 0 | 69° – 78° |
| September | 78° | 54° | 2.5" | 0 | 6 | 0 | 60° – 72° |
| October | 66° | 41° | 2.1" | 0.4" | 6 | 0 | 45° – 57° |
| November | 51° | 28° | 1.2" | 1.1" | 4 | 2 | 31° – 49° |
| December | 38° | 19° | 0.9" | 4.9" | 3 | 7 | 17° – 34° |
| Year | 63° | 40° | 28.2" | 21.2" | 72 | 33 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Grafton
Grafton gets 28 inches of rain and melted snow a year. May is the wettest month and January the driest. Rain or snow falls on about 72 days a year. Snow covers the ground about 33 days of the year.
About 178 frost-free days a year
In half of years the last 32° night comes by April 20 and the first one by October 18. That leaves about 178 frost-free days for gardens, longer than 50% of U.S. towns.
Heating and cooling a home in Grafton
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Grafton, 83% of that work is heating and 17% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Grafton compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Grafton averaged 1.0° warmer than the 1900s. The biggest change is in March (+2.7°). The shift is smaller than in 72% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Grafton’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 33° to 54°. June is the most reliable, staying within 9°.
Common questions about Grafton’s climate
What is the coldest month in Grafton?
January, with a typical high of 35° and a low of 15°.
What is the hottest month in Grafton?
July, with a typical high of 87° and a low of 65°. About 32 days a year reach 90°.
How much snow does Grafton get?
About 21 inches in a normal winter, most of it in February.
When is the first frost in Grafton?
In half of years the first 32° night comes by October 18, and the last spring frost by April 20.
What is the rainiest month in Grafton?
May, with 4.8 inches of rain and melted snow. The year totals 28 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Grafton itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Geneva, NE (9 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.