Monthly climate averages for Romulus, United States. Based on 10-year ERA5 reanalysis data.
Cfa Humid Subtropical
Climate OverviewRomulus, United States in August has warm conditions, with highs averaging 26.9°C (80°F). Rain falls on about 10 days this month.
This month falls at the end of Summer.
Temperatures remain fairly steady throughout August, with daily highs around 27°C (81°F).
August sees fairly even rainfall, totalling about 77 mm across the month.
Expect around 11.9h of sunshine at the start of August, decreasing to 10.9h by the end.
The warmest days tend to fall around the 10th, averaging 28.1°C (83°F).
Compared to July, this month is about 1°C cooler with 2 fewer rainy days. Temperatures begin dropping heading into September.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 27°C (80°F) are ideal for full-day outdoor exploration.
Rain usually comes in shorter passing showers rather than all-day rain.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -5°C | -4°C / -10°C | 9days (64 mm) Wet | 4.6h Fair | 73% Muggy | 1.9 Low | Poor | View Details |
| February | 3°C / -5°C | -1°C / -10°C | 8days (59 mm) Wet | 6.6h Fair | 72% Muggy | 3.2 Moderate | Poor | View Details |
| March | 9°C / 0°C | 5°C / -5°C | 10days (78 mm) Wet | 7.8h Good | 67% Muggy | 4.3 Moderate | Poor | View Details |
| April | 14°C / 4°C | 11°C / 0°C | 12days (89 mm) Wet | 9h Good | 67% Muggy | 5.5 High | Fair | View Details |
| May | 20°C / 11°C | 20°C / 9°C | 13days (93 mm) Wet | 10h Excellent | 70% Muggy | 6.2 High | Good | View Details |
| June best | 26°C / 17°C | 27°C / 16°C | 11days (84 mm) Wet | 11.8h Excellent | 67% Muggy | 6.8 High | Excellent | View Details |
| July best | 28°C / 19°C | 30°C / 20°C | 12days (102 mm) Wet | 11.9h Excellent | 70% Muggy | 7 High | Excellent | View Details |
| August best | 27°C / 18°C | 29°C / 19°C | 10days (77 mm) Wet | 11.4h Excellent | 70% Muggy | 6.4 High | Excellent | View Details |
| September best | 24°C / 16°C | 24°C / 15°C | 9days (60 mm) Wet | 9.3h Good | 72% Muggy | 5.1 High | Excellent | View Details |
| October | 17°C / 9°C | 15°C / 7°C | 11days (81 mm) Wet | 7.2h Good | 71% Muggy | 3.7 Moderate | Good | View Details |
| November | 9°C / 2°C | 5°C / -2°C | 9days (58 mm) Wet | 5.8h Fair | 72% Muggy | 2.3 Moderate | Poor | View Details |
| December | 4°C / -2°C | -1°C / -7°C | 10days (58 mm) Wet | 4.3h Fair | 74% Muggy | 1.7 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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