No extremes in Ironville: its weather tracks the middle of U.S. towns
On a normal July day the thermometer tops out near 87°. From frosty January to warm July, readings climb 63°. It is a wet place: more rain and snow fall here than on 60% of U.S. towns. Warm coats and heating bills mark the months from November to March, when means dip under 50°.
A year in Ironville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Ironville’s climate
Compared with towns across the U.S., with Ironville’s place in Kentucky beside it.
What a year in Ironville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 196 frost-free days a year
In half of years the last 32° night comes by April 16 and the first by October 30. Frost and day counts come from NOAA’s station at S Pt, OH, 6 miles from the town’s center, 130 ft lower.
The 2023 USDA map puts Ironville’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 0°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 6 inches of snow a winter
Snow, measured at S Pt, OH, falls mostly in January. Precipitation (rain plus melted snow) adds up to 45 inches a year; July is the wettest month and November the driest. Rain or snow falls on about 143 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Ironville
79% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at S Pt, OH.
Living with Ironville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
196 frost-free days in zone 7a. The last frost comes by Apr 16 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 30.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Ironville from natural hazards, river flooding is the largest share (63%); heat waves, cold waves, winter storms and ice storms together are 29%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Ironville and similar climates
TownRatings has no climate map of the towns around Ironville yet.
Climates most like Ironville’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.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Ironville, KY | 24° | 87° | 45" | 6.2" |
| Rockville, MD | 25° | 86° | 45" | 5.8" |
| Centralia, IL | 23° | 87° | 45" | 6.5" |
| Tysons, VA | 26° | 87° | 44" | 5.8" |
| Penn Wynne, PA | 25° | 87° | 47" | 7.6" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Ironville averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.0°).
A smaller shift than in 60% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Ironville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Ironville’s place among Kentucky’s.
Ironville weather by month
Highs, lows and precipitation from NOAA’s grid at Ironville’s center; snow, wet days and snow on the ground from S Pt, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 43° | 24° | 3.2" | 3.2" | 14 | 25° – 42° |
| February | 47° | 27° | 3.2" | 1.2" | 12 | 25° – 44° |
| March | 56° | 33° | 4.2" | 0.8" | 14 | 38° – 56° |
| April | 69° | 42° | 3.9" | 0.0" | 14 | 49° – 60° |
| May | 77° | 51° | 4.6" | 0.0" | 14 | 57° – 72° |
| June | 84° | 60° | 4.2" | 0.0" | 12 | 68° – 75° |
| July | 87° | 64° | 5.0" | 0.0" | 12 | 71° – 79° |
| August | 86° | 63° | 3.9" | 0.0" | 10 | 70° – 79° |
| September | 80° | 56° | 3.4" | 0.0" | 9 | 64° – 73° |
| October | 69° | 44° | 3.0" | 0.0" | 10 | 53° – 62° |
| November | 56° | 34° | 2.8" | 0.1" | 11 | 38° – 50° |
| December | 46° | 28° | 3.8" | 0.9" | 13 | 27° – 47° |
| Year | 67° | 44° | 45.1" | 6.2" | 143 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 27° to 47°. June is the most reliable, staying within 8°.
Where Ironville’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 Ironville’s center.
- Snow: S Pt, OH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: S Pt, OH, 6 miles from the town’s center, 130 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 Ironville’s climate
What is the weather like in Ironville?
A typical July afternoon reaches 87°, a January night drops to 24°, and about 6 inches of snow falls in a normal winter. Milder January nights than 60% of U.S. towns; hotter July afternoons than 60% of U.S. towns.
How cold does it get in Ironville in winter?
January nights average 24°. About 109 nights a year reach 32° or below and 1 reach 0° or below. In the coldest January of the last 30 years the month averaged 25°.
How much snow does Ironville get?
About 6.2 inches in a normal winter at S Pt, OH, most of it in January.
How hot does it get in Ironville?
July, with a typical high of 87° and a low of 64°. About 27 days a year reach 90° (S Pt, OH).
When is the first and last frost in Ironville?
In half of years the last spring frost (32°) comes by April 16 and the first fall frost by October 30, about 196 frost-free days, at S Pt, OH.
What growing zone is Ironville in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 0°.
What is the best time of year to visit Ironville?
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 Ironville getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 60% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Ironville.
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.