Symmes has chilly winters and warm summers
A typical July afternoon reaches 86°, a January night drops to 23°, and about 14 inches of snow falls in a normal winter.
A year in Symmes at a glance
Each month’s typical high and low, and what it brings.
What stands out about Symmes’s climate
Read from where Symmes sits among Ohio’s towns. The page puts what stands out first.
What a year in Symmes feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 167 frost-free days a year
In half of years the last 32° night comes by April 30 and the first by October 15.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
14 inches of snow, 44 of rain and melt
July is the wettest month and November the driest. Rain or snow falls on about 147 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Living with Symmes’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
167 frost-free days. The last frost comes by Apr 30 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 15.
About 14" a winter over 6 days with an inch or more, most in January.
Months averaging under 55° run from November through April. Heating is 86% of the year’s heating-and-cooling load.
About 27 days a year reach 90°, and July afternoons average 86°.
The nicest months are April, May, June, September and October.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Symmes and its neighbors
Greenfield has the coldest January nights next door (23°) and Aid the hottest July afternoons (86°). Tap a town to see its climate.
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 Symmes averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.3°).
A smaller shift than in 51% of U.S. towns.
Change by month
How Symmes compares
Against every U.S. town on TownTapestry, each counted once, with its place in Ohio.
Symmes weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 41° | 23° | 3.2" | 5.0" | 13 | 24° – 41° |
| February | 45° | 26° | 3.1" | 3.9" | 13 | 23° – 42° |
| March | 55° | 33° | 4.3" | 2.2" | 13 | 38° – 55° |
| April | 67° | 41° | 3.7" | 0.1" | 13 | 49° – 59° |
| May | 76° | 50° | 4.5" | 0 | 15 | 57° – 71° |
| June | 83° | 59° | 4.1" | 0 | 13 | 67° – 75° |
| July | 86° | 64° | 4.6" | 0 | 12 | 70° – 79° |
| August | 85° | 62° | 3.5" | 0 | 11 | 70° – 78° |
| September | 79° | 55° | 3.4" | 0 | 10 | 63° – 72° |
| October | 68° | 43° | 3.1" | 0 | 10 | 52° – 61° |
| November | 55° | 33° | 2.8" | 0.4" | 10 | 38° – 49° |
| December | 45° | 27° | 3.7" | 2.0" | 13 | 26° – 47° |
| Year | 65° | 43° | 43.9" | 13.6" | 147 |
Heating and cooling a home in Symmes
86% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 26° to 47°. June is the most reliable, staying within 8°.
Common questions about Symmes’s climate
What is the coldest month in Symmes?
January, with a typical high of 41° and a low of 23°.
What is the hottest month in Symmes?
July, with a typical high of 86° and a low of 64°. About 27 days a year reach 90°.
How much snow does Symmes get?
About 14 inches in a normal winter, most of it in January.
When is the first frost in Symmes?
In half of years the first 32° night comes by October 15, and the last spring frost by April 30.
What is the rainiest month in Symmes?
July, with 4.6 inches of rain and melted snow. The year totals 44 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Symmes.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Symmes itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Waterloo, OH (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.