Greenfield, IN climate
Greenfield has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 87°, a January night drops to 23°, and about 13 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Greenfield feels like
Winter
Spring
Summer
Fall
Greenfield 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 41° | 23° | 3.7" | 3.7" | 8 | 24° – 42° |
| February | 46° | 25° | 3.3" | 5.2" | 7 | 24° – 45° |
| March | 56° | 33° | 4.6" | 1.2" | 9 | 37° – 57° |
| April | 67° | 42° | 5.3" | 0 | 10 | 48° – 60° |
| May | 76° | 52° | 5.6" | 0 | 11 | 58° – 71° |
| June | 84° | 61° | 5.0" | 0 | 9 | 67° – 76° |
| July | 87° | 64° | 4.5" | 0 | 9 | 71° – 82° |
| August | 86° | 62° | 3.2" | 0 | 7 | 70° – 80° |
| September | 80° | 55° | 3.6" | 0 | 7 | 63° – 73° |
| October | 69° | 43° | 3.5" | 0 | 6 | 52° – 62° |
| November | 55° | 33° | 4.0" | 0.1" | 8 | 38° – 50° |
| December | 45° | 27° | 3.9" | 2.6" | 8 | 23° – 46° |
| Year | 66° | 43° | 49.9" | 12.8" | 98 |
“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 Greenfield
Greenfield gets 50 inches of rain and melted snow a year. May is the wettest month and August the driest. Rain or snow falls on about 98 days a year.
About 178 frost-free days a year
In half of years the last 32° night comes by April 21 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 Greenfield
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Greenfield, 82% of that work is heating and 18% 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.
Greenfield and its neighbors
Greenfield borders 6 towns with climate data. January nights across them vary by 0.9°. French Lick has the coldest January nights (22°) and Jackson the hottest July afternoons (87°). Greenfield’s January low is 23° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Greenfield 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 Greenfield averaged 0.7° warmer than the 1900s. The biggest change is in February (+2.0°). The shift is smaller than in 90% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Greenfield’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 23° to 46°. June is the most reliable, staying within 9°.
Common questions about Greenfield’s climate
What is the coldest month in Greenfield?
January, with a typical high of 41° and a low of 23°.
What is the hottest month in Greenfield?
July, with a typical high of 87° and a low of 64°. About 26 days a year reach 90°.
How much snow does Greenfield get?
About 13 inches in a normal winter, most of it in February.
When is the first frost in Greenfield?
In half of years the first 32° night comes by October 18, and the last spring frost by April 21.
What is the rainiest month in Greenfield?
May, with 5.6 inches of rain and melted snow. The year totals 50 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Greenfield itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Paoli, IN (8 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.