Ohio weather and outdoor projects
Ohio has cold winters, warm and humid summers and rain spread through the year. Cleveland on Lake Erie gets lake-effect clouds and snow and stays cooler in spring, Columbus is in the middle, and Cincinnati in the southwest is warmer and more humid.
Late spring and September are prime staining and painting months. Spring and fall can bring long cloudy, damp stretches, especially in the north, which slow drying. Freeze-thaw cycles are frequent in winter, so cure and seal new concrete well, and finish driveway sealing before nights turn cold in October.
Frost dates in Ohio
In Columbus, the median last spring freeze (32°F) is around April 18 and the median first fall freeze is around October 27, a frost-free season of about 191 days.
In Cleveland, the median last spring freeze (32°F) is around April 20 and the median first fall freeze is around November 3, a frost-free season of about 198 days.
In Cincinnati (CVG), the median last spring freeze (32°F) is around April 18 and the median first fall freeze is around October 25, a frost-free season of about 188 days.
Frost dates matter for concrete, which must not freeze in its first 48 hours, for paint and caulk that need nights above their minimum, and for lawn care, since crabgrass preventer goes down as the soil warms in spring. See how late in fall you can stain, paint or seal.
Best time to stain a deck in Ohio
In Columbus, the most reliable months are June–September. April–May and October can also work on the right days. November–March is too cold, with average highs around 45°F. In April and October, nights average about 44°F, so finish early on mild days and check the overnight low. May averages about 9 wet days a month, so wait for a clear stretch.
In Cleveland, the most reliable months are May–September. April and October can also work on the right days. November–March is too cold, with average highs around 43°F. April is cool, with highs around 60°F, so choose the warmest afternoons. In October, nights average about 47°F, so finish early on mild days and check the overnight low.
In Cincinnati (CVG), the most reliable months are June–September. April–May and October can also work on the right days. November–March is too cold, with average highs around 47°F. In April and October, nights average about 45°F, so finish early on mild days and check the overnight low. May averages about 9 wet days a month, so wait for a clear stretch.
Check this week’s hour-by-hour verdict with the deck staining forecast.
Best time to paint outside in Ohio
In Columbus, the most reliable months are June–September. April–May and October–November can also work on the right days. December–February is too cold, with average highs around 40°F. In March, nights average about 32°F, too cold for the coating to dry and cure overnight. In April and October, nights average about 44°F, so finish early on mild days and check the overnight low. May averages about 9 wet days a month, so wait for a clear stretch. November is cool, with highs around 52°F, so choose the warmest afternoons.
In Cleveland, the most reliable months are May–October. April and November can also work on the right days. December–March is too cold, with average highs around 40°F. In April, nights average about 41°F, so finish early on mild days and check the overnight low. November is cool, with highs around 51°F, so choose the warmest afternoons.
In Cincinnati (CVG), the most reliable months are June–October. March–May and November can also work on the right days. December–February is too cold, with average highs around 42°F. March and November are cool, with highs around 54°F, so choose the warmest afternoons. In April, nights average about 44°F, so finish early on mild days and check the overnight low. May averages about 9 wet days a month, so wait for a clear stretch.
Check this week’s hour-by-hour verdict with the exterior painting forecast.
Best time to pour concrete in Ohio
In Columbus, the most reliable months are May–September. April and October can also work on the right days. November–March averages about 19 nights a month at or below 32°F, so fresh concrete needs blankets or heated enclosures. April and October bring about 3 freezing nights a month, so pick a mild spell and keep curing blankets on hand.
In Cleveland, the most reliable months are May–October. April can also work on the right days. November–March averages about 21 nights a month at or below 32°F, so fresh concrete needs blankets or heated enclosures. April brings about 6 freezing nights a month, so pick a mild spell and keep curing blankets on hand.
In Cincinnati (CVG), the most reliable months are May–September. April and October can also work on the right days. November–March averages about 19 nights a month at or below 32°F, so fresh concrete needs blankets or heated enclosures. April and October bring about 3 freezing nights a month, so pick a mild spell and keep curing blankets on hand.
Check this week’s hour-by-hour verdict with the concrete pouring forecast.
Best time to seal a driveway in Ohio
In Columbus, the most reliable months are June–September. April–May and October can also work on the right days. November–March is too cold, with average highs around 45°F. April and October are cool, with highs around 65°F, so choose the warmest afternoons. May averages about 9 wet days a month, so wait for a clear stretch.
In Cleveland, the most reliable months are June–September. May and October can also work on the right days. November–March is too cold, with average highs around 43°F. In April, nights average about 41°F, too cold for the coating to dry and cure overnight. In May, nights average about 51°F, so finish early on mild days and check the overnight low. October is cool, with highs around 64°F, so choose the warmest afternoons.
In Cincinnati (CVG), the most reliable months are June–September. April–May and October can also work on the right days. November–March is too cold, with average highs around 47°F. April and October are cool, with highs around 66°F, so choose the warmest afternoons. May averages about 9 wet days a month, so wait for a clear stretch.
Check this week’s hour-by-hour verdict with the driveway sealing forecast.
Best time to fertilize or treat a lawn in Ohio
In Columbus, the most reliable months are April–October. March and November can also work on the right days. December–February is too cold, with average highs around 40°F. March and November are cool, with highs around 52°F, so choose the warmest afternoons.
In Cleveland, the most reliable months are April–October. November can also work on the right days. December–March is too cold, with average highs around 40°F. November is cool, with highs around 51°F, so choose the warmest afternoons.
In Cincinnati (CVG), the most reliable months are April–October. March and November can also work on the right days. December–February is too cold, with average highs around 42°F. March and November are cool, with highs around 54°F, so choose the warmest afternoons.
Check this week’s hour-by-hour verdict with the lawn fertilizer forecast.
How the weather differs across Ohio
| Place | Hottest month avg high | Coldest month avg low | Rain per year | Last spring freeze | First fall freeze |
|---|---|---|---|---|---|
| Columbus | 85°F | 22°F | 42 in | April 18 | October 27 |
| Cleveland | 84°F | 22°F | 41 in | April 20 | November 3 |
| Cincinnati (CVG) | 86°F | 23°F | 45 in | April 18 | October 25 |
Of the places above, Cleveland has the most good months for staining, painting and concrete combined (17 job-months), and Columbus has the fewest (13). If you live between them, expect something in between, and higher ground to be cooler with a shorter season.
Monthly weather in Columbus
| Month | Avg high | Avg low | Wet days* | Rain | 3 PM humidity | Freezing nights |
|---|---|---|---|---|---|---|
| January | 37°F | 22°F | 7 | 3.0 in | 64% | 25 |
| February | 41°F | 24°F | 6 | 2.4 in | 59% | 22 |
| March | 51°F | 32°F | 8 | 3.6 in | 50% | 17 |
| April | 64°F | 42°F | 8 | 3.9 in | 45% | 4 |
| May | 74°F | 52°F | 9 | 4.0 in | 48% | 0 |
| June | 82°F | 62°F | 8 | 4.3 in | 49% | 0 |
| July | 85°F | 65°F | 7 | 4.7 in | 51% | 0 |
| August | 84°F | 64°F | 6 | 3.7 in | 50% | 0 |
| September | 78°F | 57°F | 6 | 3.1 in | 48% | 0 |
| October | 66°F | 45°F | 6 | 2.9 in | 49% | 2 |
| November | 52°F | 35°F | 6 | 2.8 in | 55% | 12 |
| December | 42°F | 27°F | 6 | 3.1 in | 64% | 22 |
*Days with at least 0.1 inch of rain or melted snow. Freezing nights: average nights a month at or below 32°F. Humidity is calculated from NOAA hourly normal temperature and dew point at 3 PM.
Monthly weather in Cleveland
| Month | Avg high | Avg low | Wet days* | Rain | 3 PM humidity | Freezing nights |
|---|---|---|---|---|---|---|
| January | 36°F | 22°F | 8 | 3.0 in | 67% | 26 |
| February | 39°F | 24°F | 7 | 2.5 in | 63% | 24 |
| March | 47°F | 31°F | 8 | 3.1 in | 57% | 20 |
| April | 60°F | 41°F | 8 | 3.8 in | 52% | 6 |
| May | 71°F | 51°F | 8 | 3.8 in | 53% | 0 |
| June | 80°F | 61°F | 7 | 3.8 in | 54% | 0 |
| July | 84°F | 65°F | 7 | 3.7 in | 54% | 0 |
| August | 82°F | 64°F | 6 | 3.6 in | 56% | 0 |
| September | 76°F | 57°F | 7 | 3.9 in | 56% | 0 |
| October | 64°F | 47°F | 8 | 3.6 in | 56% | 1 |
| November | 51°F | 37°F | 8 | 3.4 in | 60% | 12 |
| December | 40°F | 28°F | 8 | 3.0 in | 67% | 22 |
Monthly weather in Cincinnati (CVG)
| Month | Avg high | Avg low | Wet days* | Rain | 3 PM humidity | Freezing nights |
|---|---|---|---|---|---|---|
| January | 40°F | 23°F | 7 | 3.3 in | 63% | 24 |
| February | 44°F | 26°F | 7 | 3.2 in | 57% | 21 |
| March | 54°F | 34°F | 8 | 4.2 in | 50% | 15 |
| April | 66°F | 44°F | 9 | 4.5 in | 48% | 4 |
| May | 75°F | 54°F | 9 | 4.7 in | 53% | 0 |
| June | 83°F | 62°F | 8 | 4.8 in | 53% | 0 |
| July | 86°F | 66°F | 7 | 3.8 in | 54% | 0 |
| August | 85°F | 65°F | 5 | 3.4 in | 52% | 0 |
| September | 79°F | 57°F | 5 | 3.1 in | 49% | 0 |
| October | 67°F | 46°F | 6 | 3.4 in | 50% | 2 |
| November | 54°F | 35°F | 6 | 3.2 in | 55% | 13 |
| December | 43°F | 28°F | 7 | 3.7 in | 63% | 21 |
Use the averages, then check the forecast
These ratings describe a typical month, not a particular week. A warm spell in a “poor” month can give you a good day, and a wet week can spoil a “good” one. Use this page to plan the season, then check the 7-day forecast for your ZIP code before you buy materials or book help. Each project forecast checks the hours after you finish too: overnight lows, dew and rain that would ruin fresh stain, paint, sealer or concrete.
About this data
Monthly temperatures, rain days, snowfall and freeze dates are NOAA National Centers for Environmental Information (NCEI) U.S. Climate Normals for 1991–2020 at COLUMBUS PORT COLUMBUS INTL AP, CLEVELAND, CINCINNATI NORTHERN KY AP. Ratings apply the same temperature limits as our forecasts (for example, 50°F or warmer for deck stain and driveway sealer, and no freezing nights for new concrete) to the average month. Your product label always takes priority.
Frequently asked questions
When is the best time to stain a deck in Ohio?
In Columbus, June–September. In Cleveland, May–September. In Cincinnati (CVG), June–September. Look for at least 24 dry hours before and after, and nights above about 40°F. The deck staining forecast checks your exact week.
When is the last frost in Ohio?
Columbus: around April 18; Cleveland: around April 20; Cincinnati (CVG): around April 18. These are median dates from NOAA 1991–2020 normals, so a freeze after them happens in about half of years. Low spots and valleys freeze later in spring.
Can you pour concrete in winter in Ohio?
Yes, but it needs cold-weather practices. Columbus averages about 69 freezing nights from December to February, so fresh concrete needs insulated blankets, a heated enclosure or an accelerated mix, and must not freeze in the first 48 hours. Many homeowners wait for spring.
What months are best for sealing a driveway in Ohio?
In Columbus, June–September. In Cleveland, June–September. In Cincinnati (CVG), June–September. Most sealers need 50°F or warmer for 24 hours and a dry day after. See the driveway sealing forecast.