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Weather & Climate
Seneca County, Ohio, United States
Overview
Climate data and monthly weather averages for Seneca County.
Key Metrics
Annual Avg
10.3°C
Summer Avg
22.1°C
Winter Avg
-2.2°C
Record High
39°C
Record Low
-27.3°C
Annual Precipitation
947.1 mm
Avg Humidity
78%
Summer Humidity
74%
Winter Humidity
85%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 17.6° | -3.5° | -27.3° | 59.8 | 86% | 49 | 64.4 |
| Feb | 21.8° | -2.3° | -21.9° | 56.3 | 84% | 69 | 68.7 |
| Mar | 27.1° | 3° | -16.6° | 71 | 80% | 108 | 67 |
| Apr | 27.6° | 9.6° | -8° | 87.9 | 76% | 141 | 67.8 |
| May | 32.1° | 15.8° | -4° | 103.2 | 77% | 170 | 54.6 |
| Jun | 36.7° | 20.7° | 4° | 98.4 | 77% | 185 | 48.3 |
| Jul | 39° | 23.1° | 9.1° | 90.5 | 73% | 192 | 44 |
| Aug | 36.8° | 22.5° | 8.4° | 87.1 | 71% | 168 | 40.8 |
| Sep | 35.5° | 18.7° | 3.1° | 81.6 | 72% | 131 | 58.6 |
| Oct | 31.3° | 11.5° | -3.3° | 76 | 75% | 90 | 54.4 |
| Nov | 25.1° | 4.8° | -11.6° | 69 | 79% | 57 | 64.4 |
| Dec | 20.3° | -0.7° | -24.3° | 66.3 | 85% | 41 | 63 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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