When to go · Grinnell
Grinnell in August
Great month. Inside Grinnell's best window: May–Oct (warm, low rain).
Key facts
- Verdict
- Great
- Temperature
- 90°C (194°F)194°F (90°C) / 70°C (158°F)158°F (70°C)
- average high / low
- Rain days
- 0
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Inside Grinnell's best window: May–Oct (warm, low rain).
Is another month better than August?
No other month rates higher than August for Grinnell in this guide.
Weather in August
- GrinnellHighs around 90 °C (194 °F), lows around 70 °C (158 °F), rain on about 0 daysHighs around 194 °F (90 °C), lows around 158 °F (70 °C), rain on about 0 days
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Grinnell, side by side.
Verdict
Aug: Great
May: Great
Daytime high
Aug: 90 °C (194 °F)194 °F (90 °C)
May: 78 °C (172 °F)172 °F (78 °C)
Night low
Aug: 70 °C (158 °F)158 °F (70 °C)
May: 56 °C (133 °F)133 °F (56 °C)
Rain days
Aug: 0
May: 0
Crowds
Aug: High
May: Medium
Prices
Aug: High
May: Medium
Festivals listed
Aug: 0
May: 1
August: Inside Grinnell's best window: May–Oct (warm, low rain).
May: Inside Grinnell's best window: May–Oct (warm, low rain).
Grinnell: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen