Harrison, IN climate
Harrison has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 21°, and about 15 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decade16° warmer than normal today. The forecast high is 89°, and a typical Oct 1 in Harrison peaks around 73°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Harrison feels like
Winter
Spring
Summer
Fall
Harrison 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 | 37° | 21° | 3.0" | 5.3" | 11 | 10 | 22° – 40° |
| February | 42° | 24° | 2.3" | 3.6" | 10 | 6 | 20° – 43° |
| March | 53° | 33° | 3.3" | 1.7" | 11 | 1 | 36° – 57° |
| April | 66° | 43° | 4.7" | 0 | 12 | 0 | 47° – 60° |
| May | 75° | 53° | 4.4" | 0 | 13 | 0 | 58° – 73° |
| June | 84° | 62° | 5.0" | 0 | 11 | 0 | 69° – 76° |
| July | 87° | 65° | 4.1" | 0 | 10 | 0 | 71° – 84° |
| August | 86° | 63° | 3.2" | 0 | 8 | 0 | 70° – 80° |
| September | 80° | 55° | 3.0" | 0 | 8 | 0 | 63° – 73° |
| October | 68° | 44° | 3.5" | 0.1" | 9 | 0 | 52° – 62° |
| November | 53° | 34° | 3.5" | 0.5" | 10 | 1 | 36° – 51° |
| December | 41° | 26° | 2.8" | 3.9" | 11 | 6 | 20° – 43° |
| Year | 64° | 44° | 42.8" | 15.1" | 121 | 23 |
“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 Harrison
Harrison gets 43 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 121 days a year. Snow covers the ground about 23 days of the year.
About 183 frost-free days a year
In half of years the last 32° night comes by April 16 and the first one by October 18. That leaves about 183 frost-free days for gardens, longer than 56% of U.S. towns.
Heating and cooling a home in Harrison
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Harrison, 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.
Harrison and its neighbors
Harrison borders 4 towns with climate data. January nights across them vary by 0.3°. Lost Creek has the coldest January nights (21°) and Terre Haute the hottest July afternoons (87°). Harrison’s January low is 21° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Harrison 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 Harrison averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.1°). The shift is smaller than in 51% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Harrison’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 20° to 43°. June is the most reliable, staying within 7°.
Common questions about Harrison’s climate
What is the coldest month in Harrison?
January, with a typical high of 37° and a low of 21°.
What is the hottest month in Harrison?
July, with a typical high of 87° and a low of 65°. About 24 days a year reach 90°.
How much snow does Harrison get?
About 15 inches in a normal winter, most of it in January.
When is the first frost in Harrison?
In half of years the first 32° night comes by October 18, and the last spring frost by April 16.
What is the rainiest month in Harrison?
June, with 5.0 inches of rain and melted snow. The year totals 43 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Harrison itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Farmersburg Tv-2, IN (16 mi, snow) and Terre Haute Hulman Rgnl Airport, IN (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.