Walnut Creek, OH climate
Walnut Creek has chilly winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 20°, and about 20 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Walnut Creek feels like
Winter
Spring
Summer
Fall
Walnut Creek 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 | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 35° | 20° | 2.8" | 7.3" | 11 | 11 | 18° – 38° |
| February | 39° | 21° | 2.4" | 4.8" | 9 | 9 | 16° – 39° |
| March | 48° | 29° | 3.2" | 2.9" | 10 | 3 | 32° – 51° |
| April | 62° | 39° | 3.8" | 0.2" | 12 | 0 | 44° – 55° |
| May | 72° | 48° | 4.1" | 0 | 13 | 0 | 53° – 67° |
| June | 80° | 58° | 4.6" | 0 | 12 | 0 | 64° – 71° |
| July | 83° | 61° | 4.2" | 0 | 11 | 0 | 68° – 76° |
| August | 82° | 60° | 3.7" | 0 | 9 | 0 | 66° – 76° |
| September | 75° | 52° | 3.3" | 0 | 8 | 0 | 61° – 69° |
| October | 64° | 42° | 3.1" | 0 | 10 | 0 | 49° – 59° |
| November | 51° | 32° | 2.9" | 0.7" | 9 | 1 | 35° – 47° |
| December | 40° | 25° | 2.9" | 4.2" | 10 | 5 | 21° – 43° |
| Year | 61° | 40° | 41.2" | 20.1" | 124 | 29 |
“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 Walnut Creek
Walnut Creek gets 41 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 124 days a year. Snow covers the ground about 29 days of the year.
About 190 frost-free days a year
In half of years the last 32° night comes by April 18 and the first one by October 28. That leaves about 190 frost-free days for gardens, longer than 64% of U.S. towns.
Heating and cooling a home in Walnut Creek
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Walnut Creek, 87% of that work is heating and 13% 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.
How Walnut Creek 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 Walnut Creek averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.8°). The shift is larger than in 58% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Walnut Creek’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 16° to 39°. June is the most reliable, staying within 6°.
Common questions about Walnut Creek’s climate
What is the coldest month in Walnut Creek?
January, with a typical high of 35° and a low of 20°.
What is the hottest month in Walnut Creek?
July, with a typical high of 83° and a low of 61°. About 10 days a year reach 90°.
How much snow does Walnut Creek get?
About 20 inches in a normal winter, most of it in January.
When is the first frost in Walnut Creek?
In half of years the first 32° night comes by October 28, and the last spring frost by April 18.
What is the rainiest month in Walnut Creek?
June, with 4.6 inches of rain and melted snow. The year totals 41 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Walnut Creek itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Millersburg, OH (10 mi, snow) and Coshocton Ag Rsch Stn, OH (13 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.