Cynthian, OH climate
Cynthian has chilly winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 19°, and about 26 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Cynthian feels like
Winter
Spring
Summer
Fall
Cynthian 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 | 34° | 19° | 2.8" | 9.1" | 11 | 18° – 38° |
| February | 38° | 22° | 2.2" | 6.9" | 10 | 17° – 40° |
| March | 49° | 30° | 3.1" | 3.8" | 11 | 33° – 53° |
| April | 62° | 40° | 4.0" | 0.3" | 12 | 44° – 56° |
| May | 73° | 51° | 4.3" | 0 | 13 | 55° – 68° |
| June | 81° | 60° | 4.4" | 0 | 12 | 65° – 73° |
| July | 84° | 63° | 4.4" | 0 | 9 | 69° – 79° |
| August | 83° | 61° | 3.4" | 0 | 8 | 67° – 77° |
| September | 77° | 54° | 3.1" | 0 | 8 | 62° – 70° |
| October | 64° | 43° | 2.9" | 0 | 8 | 50° – 60° |
| November | 50° | 33° | 3.1" | 0.7" | 9 | 35° – 48° |
| December | 39° | 25° | 2.8" | 5.2" | 10 | 19° – 42° |
| Year | 61° | 42° | 40.5" | 26.0" | 122 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Cynthian
Cynthian gets 40 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 122 days a year.
About 175 frost-free days a year
In half of years the last 32° night comes by April 27 and the first one by October 20. That leaves about 175 frost-free days for gardens, shorter than 54% of U.S. towns.
Heating and cooling a home in Cynthian
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Cynthian, 88% of that work is heating and 12% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Cynthian and its neighbors
Cynthian borders 5 towns with climate data. January nights across them vary by 0.7°. McLean has the coldest January nights (19°) and Washington the hottest July afternoons (84°). Cynthian’s January low is 19° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Cynthian compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Cynthian averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.1°). The shift is smaller than in 65% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Cynthian’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 19° to 42°. September is the most reliable, staying within 8°.
Common questions about Cynthian’s climate
What is the coldest month in Cynthian?
January, with a typical high of 34° and a low of 19°.
What is the hottest month in Cynthian?
July, with a typical high of 84° and a low of 63°. About 14 days a year reach 90°.
How much snow does Cynthian get?
About 26 inches in a normal winter, most of it in January.
When is the first frost in Cynthian?
In half of years the first 32° night comes by October 20, and the last spring frost by April 27.
What is the rainiest month in Cynthian?
July, with 4.4 inches of rain and melted snow. The year totals 40 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Cynthian itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Versailles, OH (9 mi, snow) and Sidney 1 S, OH (11 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.