Weather without surprises: Lake Darby keeps close to the norm for U.S. towns
The warmest part of a July day comes in at 85° on average. By precipitation alone, it ranks drier than 62% of U.S. towns. Since 1901–2000, the year has warmed by 1.1°, most of all in December. Seedlings are safe outdoors from about April 22, with the first autumn frost due around October 23.
A year in Lake Darby at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lake Darby’s climate
Compared with towns across the U.S., with Lake Darby’s place in Ohio beside it.
What a year in Lake Darby feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 183 frost-free days a year
In half of years the last 32° night comes by April 22 and the first by October 23. Frost and day counts come from NOAA’s station at Columbus Ohio State Univ Airport, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lake Darby’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −4°. 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 24 inches of snow a winter
Snow, measured at Marysville, OH, is heaviest from January through February, about 7 inches a month. Precipitation (rain plus melted snow) adds up to 40 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 126 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lake Darby
86% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Columbus Ohio State Univ Airport.
Living with Lake Darby’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
183 frost-free days in zone 6b. The last frost comes by Apr 22 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 23.
Months with highs of 62–84° and lows of 40° or more: April, May, June, August, September and October. 2.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lake Darby from natural hazards, river flooding is the largest share (71%); heat waves, cold waves, winter storms and ice storms together are 19%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lake Darby and its neighbors
Every town next door is within a degree of Lake Darby in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Lake Darby’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 |
|---|---|---|---|---|
| Lake Darby, OH | 21° | 85° | 40" | 24" |
| Huntingdon, PA | 21° | 85° | 40" | 26" |
| Peru, IN | 19° | 84° | 40" | 21" |
| Savoy, IL | 18° | 85° | 40" | 21" |
| Staunton, VA | 25° | 85° | 41" | 22" |
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.
Warmer than it used to be
The last 30 years in Lake Darby averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 72% 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 Lake Darby compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lake Darby’s place among Ohio’s.
Lake Darby weather by month
Highs, lows and precipitation from NOAA’s grid at Lake Darby’s center; snow, wet days and snow on the ground from Marysville, OH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 36° | 21° | 2.6" | 7.0" | 11 | 14 | 20° – 40° |
| February | 40° | 23° | 2.3" | 6.6" | 10 | 12 | 18° – 41° |
| March | 50° | 31° | 3.2" | 4.1" | 11 | 4 | 34° – 53° |
| April | 64° | 41° | 3.9" | 0.1" | 12 | 0 | 46° – 58° |
| May | 74° | 51° | 4.4" | 0.0" | 14 | 0 | 56° – 70° |
| June | 82° | 60° | 4.4" | 0.0" | 12 | 0 | 67° – 74° |
| July | 85° | 64° | 4.3" | 0.0" | 10 | 0 | 70° – 78° |
| August | 84° | 62° | 3.2" | 0.0" | 9 | 0 | 68° – 77° |
| September | 78° | 55° | 3.1" | 0.0" | 9 | 0 | 62° – 71° |
| October | 65° | 43° | 2.7" | 0.0" | 9 | 0 | 51° – 60° |
| November | 52° | 34° | 2.7" | 0.7" | 10 | 1 | 36° – 49° |
| December | 41° | 26° | 2.8" | 5.5" | 11 | 8 | 22° – 44° |
| Year | 62° | 42° | 39.7" | 24.0" | 126 | 38 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 18° to 41°. June is the most reliable, staying within 7°.
Where Lake Darby’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 Lake Darby’s center.
- Snow: Marysville, OH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Columbus Ohio State Univ Airport, 11 miles from the town’s center, at about the same height; 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 Lake Darby’s climate
What is the weather like in Lake Darby?
A typical July afternoon reaches 85°, a January night drops to 21°, and about 24 inches of snow falls in a normal winter. Colder January nights than 55% of U.S. towns; cooler July afternoons than 53% of U.S. towns.
How cold does it get in Lake Darby in winter?
January nights average 21°. About 112 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 20°.
How much snow does Lake Darby get?
About 24 inches in a normal winter at Marysville, OH, heaviest from January through February, about 7 inches a month, with snow on the ground about 38 days a year.
How hot does it get in Lake Darby?
July, with a typical high of 85° and a low of 64°. About 17 days a year reach 90° (Columbus Ohio State Univ Airport).
When is the first and last frost in Lake Darby?
In half of years the last spring frost (32°) comes by April 22 and the first fall frost by October 23, about 183 frost-free days, at Columbus Ohio State Univ Airport.
What growing zone is Lake Darby in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −4°.
What is the best time of year to visit Lake Darby?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lake Darby getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 72% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lake Darby.
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.