Monthly climate averages for Olean, United States. Based on 10-year ERA5 reanalysis data.
Dfb Warm-Summer Continental
Climate OverviewOlean, United States in July has warm conditions, with highs averaging 26.3°C (79°F). Rain falls on about 14 days this month.
This month falls at the middle of Summer.
Temperatures remain fairly steady throughout July, with daily highs around 26°C (79°F).
July sees fairly even rainfall, totalling about 91 mm across the month.
Expect around 11.8h of sunshine at the start of July, decreasing to 11.1h by the end.
The warmest days tend to fall around the 6th, averaging 27°C (81°F).
Compared to June, this month is about 3°C warmer with 1 more rainy days.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 26°C (79°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 July have stayed close to the long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -7°C | -4°C / -12°C | 15days (87 mm) Wet | 4.5h Fair | 78% Humid | 1.9 Low | Poor | View Details |
| February | 3°C / -6°C | -2°C / -11°C | 13days (87 mm) Wet | 5.8h Fair | 75% Muggy | 3 Moderate | Poor | View Details |
| March | 7°C / -2°C | 4°C / -7°C | 13days (90 mm) Wet | 7.3h Good | 70% Muggy | 4.2 Moderate | Poor | View Details |
| April | 13°C / 3°C | 11°C / 0°C | 15days (114 mm) Wet | 8.4h Good | 70% Muggy | 4.8 Moderate | Poor | View Details |
| May | 19°C / 10°C | 18°C / 8°C | 15days (112 mm) Wet | 9.6h Good | 75% Muggy | 5.8 High | Good | View Details |
| June best | 24°C / 14°C | 24°C / 14°C | 13days (103 mm) Wet | 11.1h Excellent | 75% Muggy | 6.7 High | Excellent | View Details |
| July best | 26°C / 17°C | 28°C / 18°C | 14days (91 mm) Wet | 11.3h Excellent | 76% Humid | 6.9 High | Excellent | View Details |
| August best | 25°C / 17°C | 26°C / 17°C | 13days (101 mm) Wet | 10.4h Excellent | 77% Humid | 5.9 High | Excellent | View Details |
| September best | 22°C / 13°C | 22°C / 13°C | 9days (84 mm) Wet | 8.8h Good | 78% Humid | 5 Moderate | Excellent | View Details |
| October | 16°C / 8°C | 14°C / 5°C | 12days (104 mm) Wet | 6.9h Fair | 78% Humid | 3.4 Moderate | Fair | View Details |
| November | 8°C / 1°C | 4°C / -3°C | 13days (81 mm) Wet | 5.3h Fair | 77% Humid | 2.2 Moderate | Poor | View Details |
| December | 2°C / -4°C | -2°C / -9°C | 15days (85 mm) Wet | 3.9h Poor | 79% 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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