Climate · Middletown

Middletown, OH climate

Middletown has chilly winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 22°, and about 10 inches of snow falls in a normal winter.

NOAA 1991-2020 climate normals Updated once a decade
July high
86°
157th hottest of 2,573 Ohio towns
January low
22°
516th mildest of 2,573 Ohio towns
Rain + melted snow
43 in
671st wettest of 2,573 Ohio towns
Snow a winter
10 in
96th least snowy of 2,536 Ohio towns
A normal year

What a year in Middletown feels like

Winter

41° / 24°
Typical high / low · 3 days with an inch or more of snow

Spring

64° / 42°
Typical high / low · Last frost around Apr 24

Summer

85° / 63°
Typical high / low · 22 days reach 90° in a normal year

Fall

66° / 44°
Typical high / low · First frost around Oct 19
Best months to be outsideAprMayJunSepOctHighs of 62–84° and lows of 40° or more
Month by month

Middletown weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January38°22°3.1" 4.7"116 21° – 41°
February42°24°2.5" 1.9"93 20° – 43°
March52°33°3.6" 1.5"101 35° – 54°
April65°42°4.5" 0120 47° – 59°
May75°52°4.5" 0120 58° – 71°
June83°61°4.8" 0120 67° – 75°
July86°65°4.0" 0100 70° – 80°
August85°63°3.2" 070 69° – 79°
September79°55°3.0" 070 64° – 72°
October66°44°3.1" 080 52° – 61°
November53°34°3.0" 0.2"90 37° – 50°
December42°27°3.3" 1.4"103 22° – 45°
Year64°43°42.6"9.7"11712

“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 & snow

Rain and snow in Middletown

Middletown 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 117 days a year. Snow covers the ground about 12 days of the year.

43 in
Rain + melted snow a year
More rain than 60% of U.S. towns
10 in
Snow in a normal winter
Less snow than 73% of U.S. towns
12 days
With 1"+ of snow on the ground
Fewer than 66% of U.S. towns

Rain + melted snow by month

Inches of water
4.8"

Snowfall by month

Inches of snow
4.7"
Frost & the growing season

About 178 frost-free days a year

In half of years the last 32° night comes by April 24 and the first one by October 19. That leaves about 178 frost-free days for gardens, longer than 50% of U.S. towns.

120
nights at or below 32° in a normal year
3
nights below 0° in a normal year
22
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

90° days by month

Average days at 90° or more
Heating & cooling

Heating and cooling a home in Middletown

Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Middletown, 85% of that work is heating and 15% is cooling, so the furnace matters far more than the air conditioner.

85%heating
5,409 heating degree daysLess heating than 58% of U.S. towns
956 cooling degree daysMore cooling than 58% of U.S. towns

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.

Around Middletown

Middletown and its neighbors

Middletown borders 6 towns with climate data. January nights across them vary by 0.5°. Madison has the coldest January nights (22°) and Lemon the hottest July afternoons (86°). Middletown’s January low is 22° and its July high 86°.

Liberty: January low 22°, July high 86°Trenton: January low 22°, July high 86°German: January low 22°, July high 86°St. Clair: January low 22°, July high 87°Wayne: January low 21°, July high 85°Gratis: January low 21°, July high 85°Woodsdale: January low 22°, July high 87°Fairfield: January low 22°, July high 86°Clear Creek: January low 22°, July high 85°Springboro: January low 22°, July high 85°Franklin: January low 22°, July high 86°Miami: January low 22°, July high 86°Lebanon: January low 22°, July high 86°Washington: January low 22°, July high 85°Mason: January low 22°, July high 86°Wayne: January low 22°, July high 85°Union: January low 22°, July high 86°Salem: January low 22°, July high 86°Lemon: January low 22°, July high 86°Monroe: January low 22°, July high 86°Madison: January low 22°, July high 86°Hunter: January low 22°, July high 85°Franklin: January low 22°, July high 86°Turtlecreek: January low 22°, July high 86°Middletown: January low 22°, July high 86° MiddletownLemonMonroeMadisonHunterFranklinTurtlecreek
ColderMilder21° to 22°
Madison21.6° −0.2°
Middletown21.8°
Franklin21.8° same
Hunter21.9° +0.1°
Lemon22.1° +0.3°
Monroe22.1° +0.3°
Turtlecreek22.1° +0.3°

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.

Compared with other towns

How Middletown compares

Summer heat86° July high
Hotter than 58% of U.S. towns157th hottest of 2,573 Ohio towns
Winter cold22° January low
Milder than 62% of U.S. towns516th mildest of 2,573 Ohio towns
Precipitation43" a year
Wetter than 60% of U.S. towns671st wettest of 2,573 Ohio towns
Snow10" a winter
Less snow than 73% of U.S. towns96th least snowy of 2,536 Ohio towns
Growing season178 frost-free days
Longer than 50% of U.S. towns1186th shortest of 2,573 Ohio towns

Compared with every U.S. town and city on TownTapestry, each counted once.

Then and now

Warmer than it used to be

+1.3°1991–2020 average vs. the 20th century (1901–2000)

The last 30 years in Middletown averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.5°). The shift is larger than in 57% of U.S. towns.

❄️ Winter+1.9° now 32°, was 31°
🌷 Spring+1.7° now 53°, was 51°
☀️ Summer+0.7° now 74°, was 73°
🍂 Fall+0.9° now 55°, was 54°

Change by month1991–2020 average minus 1901–2000 average, at Middletown’s spot on NOAA’s grid

Year to year

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 22° to 45°. June is the most reliable, staying within 8°.

Coldest to warmest month in 30 yearsNormal
Questions

Common questions about Middletown’s climate

What is the coldest month in Middletown?

January, with a typical high of 38° and a low of 22°.

What is the hottest month in Middletown?

July, with a typical high of 86° and a low of 65°. About 22 days a year reach 90°.

How much snow does Middletown get?

About 10 inches in a normal winter, most of it in January.

When is the first frost in Middletown?

In half of years the first 32° night comes by October 19, and the last spring frost by April 24.

What is the rainiest month in Middletown?

June, with 4.8 inches of rain and melted snow. The year totals 43 inches.

Temperatures and rainfall come from NOAA’s gridded climate normals for Middletown itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Middletown, OH (2 mi, snow) and Franklin, OH (4 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.

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