Monthly climate averages for Ashtabula, United States. Based on 10-year ERA5 reanalysis data.
Cfa Humid Subtropical
Climate OverviewAshtabula, United States in August has warm conditions, with highs averaging 24.7°C (76°F). Rain falls on about 13 days this month.
This month falls at the end of Summer.
Temperatures remain fairly steady throughout August, with daily highs around 25°C (77°F).
August sees fairly even rainfall, totalling about 114 mm across the month.
Expect around 12.0h of sunshine at the start of August, decreasing to 10.7h by the end.
The warmest days tend to fall around the 4th, averaging 25.5°C (78°F).
Temperatures begin dropping heading into September.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 25°C (76°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain usually comes in shorter passing showers rather than all-day rain.
Recent yearly records for August have stayed close to the long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -3°C | -3°C / -8°C | 15days (95 mm) Wet | 4.1h Fair | 76% Humid | 1.8 Low | Poor | View Details |
| February | 3°C / -3°C | -2°C / -8°C | 12days (86 mm) Wet | 5.7h Fair | 75% Muggy | 3.1 Moderate | Poor | View Details |
| March | 6°C / 0°C | 2°C / -4°C | 14days (101 mm) Wet | 7.4h Good | 74% Muggy | 4.3 Moderate | Poor | View Details |
| April | 11°C / 5°C | 8°C / 1°C | 15days (112 mm) Wet | 8.9h Good | 75% Muggy | 5.3 High | Poor | View Details |
| May | 17°C / 11°C | 16°C / 9°C | 14days (116 mm) Wet | 10h Excellent | 78% Humid | 6.2 High | Good | View Details |
| June best | 23°C / 17°C | 24°C / 17°C | 11days (116 mm) Wet | 11.6h Excellent | 77% Humid | 6.7 High | Excellent | View Details |
| July best | 26°C / 20°C | 29°C / 22°C | 14days (128 mm) Wet | 11.6h Excellent | 78% Humid | 7 High | Excellent | View Details |
| August best | 25°C / 20°C | 27°C / 21°C | 13days (114 mm) Wet | 11.2h Excellent | 77% Humid | 6.5 High | Excellent | View Details |
| September best | 22°C / 17°C | 23°C / 17°C | 9days (80 mm) Wet | 9.3h Good | 76% Humid | 5.1 High | Excellent | View Details |
| October | 16°C / 11°C | 15°C / 9°C | 12days (107 mm) Wet | 7.2h Good | 74% Muggy | 3.6 Moderate | Good | View Details |
| November | 9°C / 5°C | 6°C / 0°C | 13days (92 mm) Wet | 5.4h Fair | 72% Muggy | 2.2 Moderate | Poor | View Details |
| December | 4°C / 0°C | 0°C / -5°C | 15days (99 mm) Wet | 3.9h Poor | 76% Humid | 1.6 Low | Poor | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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