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Sugar Run Valley Baptist ChurchPhoto: Nyttend · Public domain
Climate in Harlan Township · NOAA 1991–2020 normals

The climate in Harlan Township sits close to the middle of U.S. towns

Midwinter brings lows of about 22°. The latest 30-year average runs 1.3° warmer than 1901–2000’s, with December up the most. Comfortable outdoor weather lasts from April to June and September to October, with highs of 65–82°.

Less snow than 59% of U.S. towns#114Least snow  of 925 in OH
Milder January nights than 52% of U.S. towns#159Mildest winters  of 935 in OH
All OH rankings →

A year in Harlan Township at a glance

Each month’s typical high and low, and what it brings.

Jan38°22° 5" snow
Feb42°25° 4" snow
Mar52°33°
Apr65°42° Last frost ~Apr 23
May74°52°
Jun82°60° 5 days 90°+Wettest
Jul85°64° 11 days 90°+
Aug84°62° 9 days 90°+
Sep78°55° 3 days 90°+
Oct66°44° First frost ~Oct 18
Nov now53°34°
Dec43°27°

What stands out about Harlan Township’s climate

Compared with towns across the U.S., with Harlan Township’s place in Ohio beside it.

A normal year

What a year in Harlan Township feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
41° / 25°
5 days with 1"+ of snow
Spring
64° / 42°
Last frost around Apr 23
Summer
84° / 62°
28 days reach 90°
Fall
66° / 44°
First frost around Oct 18
Best months to be outsideAprMayJunSepOctHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 177 frost-free days a year

In half of years the last 32° night comes by April 23 and the first by October 18. Frost and day counts come from NOAA’s station at Milford, OH, 14 miles from the town’s center, 370 ft lower.

116
nights at or below 32° in a normal year
558th most of 935 in Ohio
More freezing nights than 52% of U.S. towns
3
nights at or below 0°
753rd most of 935 in Ohio
More nights at or below 0° than 56% of U.S. towns
28
days that reach 90°
51st most of 935 in Ohio
More 90° days than 60% of U.S. towns
<1
days that reach 100°
624th fewest of 935 in Ohio
Fewer 100° days than 56% of U.S. towns
6bUSDA zone
Plant hardiness zone 6b

The 2023 USDA map puts Harlan Township’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −3°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

26
JFMAMJJASOND

90° days by month

Average days at 90° or more

11
JFMAMJJASOND
Rain & snow

About 14 inches of snow a winter

Snow, measured at Kings Mills, OH, falls mostly in January. Precipitation (rain plus melted snow) adds up to 45 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 116 days a year.

45"
Rain + melted snow a year
62nd wettest of 935 in Ohio
Wetter than 58% of U.S. towns
14"
Snow in a normal winter
114th least snowy of 925 in Ohio
Less snow than 59% of U.S. towns
20 days
With 1"+ of snow on the ground
90th fewest of 777 in Ohio
Fewer days with snow on the ground than 52% of U.S. towns

Rain + melted snow by month

Inches of water

4.8"
JFMAMJJASOND

Snowfall by month

Inches of snow

5"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Harlan Township

83% of the work is heating. Months averaging under 55° run from November through April.

5,134 heating degree daysLess heating than 54% of U.S. towns
1,083 cooling degree daysMore cooling than 59% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Milford, OH.

Living here

Living with Harlan Township’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

177 frost-free days in zone 6b. The last frost comes by Apr 23 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 18.

Get outside

Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 0.4 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Harlan Township from natural hazards, river flooding is the largest share (58%); heat waves, cold waves, winter storms and ice storms together are 15%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door

Harlan Township and its neighbors

Every town next door is within a degree of Harlan Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.

Union Township: January low 22°, July high 86°Turtlecreek Township: January low 22°, July high 86°Deerfield Township: January low 22°, July high 86°Loveland: January low 23°, July high 86°Loveland Park: January low 23°, July high 86°Kings Mills: January low 22°, July high 86°Symmes Township: January low 23°, July high 86°South Lebanon: January low 22°, July high 86°Mason: January low 22°, July high 86°Massie Township: January low 22°, July high 85°Wayne Township: January low 22°, July high 85°Vernon Township: January low 22°, July high 85°Jefferson Township: January low 22°, July high 85°Washington Township: January low 22°, July high 84°Salem Township: January low 22°, July high 86°Hamilton Township: January low 23°, July high 86°Washington Township: January low 22°, July high 85°Marion Township: January low 22°, July high 85°Harlan Township: January low 22°, July high 85°Harlan TownshipSalem TownshipHamilton TownshipWashington TownshipMarion Township
ColderMilder22° to 23°
Washington Township21.9° about the same
Marion Township22.0° about the same
Harlan Township22.1°
Salem Township22.3° about the same
Hamilton Township22.5° about the same

Climates most like Harlan Township’s, farther away

TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.

TownJan. lowJuly highPrecip.Snow
Harlan Township, OH22°85°45"14"
Moundsville, WV22°85°43"16"
Plainview, NY24°85°45"19"
Lititz, PA22°86°45"21"
Massanetta Springs, VA24°85°43"19"

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.

Then and now

Warmer than it used to be

The last 30 years in Harlan Township averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.7°).

+1.3°1991–2020 vs. 1901–2000

A smaller shift than in 51% of U.S. towns.

Winter+2.1°now 33°, was 31°
Spring+1.7°now 53°, was 51°
Summer+0.6°now 73°, was 72°
Fall+1.0°now 55°, was 54°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How Harlan Township compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Harlan Township’s place among Ohio’s.

Summer heat85° July high
Cooler July afternoons than 50% of U.S. towns735th coolest of 935 in Ohio
Winter cold22° January low
Milder January nights than 52% of U.S. towns159th mildest of 935 in Ohio
Precipitation45" a year
Wetter than 58% of U.S. towns62nd wettest of 935 in Ohio
Snow14" a winter
Less snow than 59% of U.S. towns114th least snowy of 925 in Ohio
Hot days28 days at 90°+
More 90° days than 60% of U.S. towns51st most of 935 in Ohio
Freezing nights116 a year
More freezing nights than 52% of U.S. towns558th most of 935 in Ohio
Growing season177 frost-free days
A shorter frost-free season than 61% of U.S. towns307th shortest of 935 in Ohio
Month by month

Harlan Township weather by month

Highs, lows and precipitation from NOAA’s grid at Harlan Township’s center; snow, wet days and snow on the ground from Kings Mills, OH. 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January38°22°3.3"5.2"10822° – 41°
February42°25°2.8"3.7"9621° – 43°
March52°33°3.9"2.8"10236° – 55°
April65°42°4.5"0.1"12047° – 59°
May74°52°4.7"0.0"13057° – 71°
June82°60°4.8"0.0"11067° – 74°
July85°64°4.2"0.0"9070° – 79°
August84°62°3.4"0.0"8068° – 78°
September78°55°3.1"0.0"7063° – 72°
October66°44°3.1"0.2"8052° – 61°
November53°34°3.1"0.5"9038° – 49°
December43°27°3.5"1.9"10423° – 45°
Year64°43°44.5"14.4"11620
Year to year

How much a month can swing

A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 23° to 45°. June is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal
Sources

Where Harlan Township’s numbers come from

Normals are 30-year averages, not a forecast. How TownRatings reads climate data →

  • Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Harlan Township’s center.
  • Snow: Kings Mills, OH.
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Milford, OH, 14 miles from the town’s center, 370 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
  • Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
  • Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
  • Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).

Common questions about Harlan Township’s climate

What is the weather like in Harlan Township?

A typical July afternoon reaches 85°, a January night drops to 22°, and about 14 inches of snow falls in a normal winter. Milder January nights than 52% of U.S. towns; cooler July afternoons than 50% of U.S. towns.

How cold does it get in Harlan Township in winter?

January nights average 22°. About 116 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 22°.

How much snow does Harlan Township get?

About 14 inches in a normal winter at Kings Mills, OH, most of it in January, with snow on the ground about 20 days a year.

How hot does it get in Harlan Township?

July, with a typical high of 85° and a low of 64°. About 28 days a year reach 90° (Milford, OH).

When is the first and last frost in Harlan Township?

In half of years the last spring frost (32°) comes by April 23 and the first fall frost by October 18, about 177 frost-free days, at Milford, OH.

What growing zone is Harlan Township in?

Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −3°.

What is the best time of year to visit Harlan Township?

By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Is Harlan Township getting warmer?

Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 51% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in Harlan Township.

Town Square →
Ask your neighbors

Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.