When to go · Waterloo, Iowa
Waterloo, Iowa, month by month
The best months for Waterloo, Iowa: May, Jun, Jul, Aug, Sep, Oct. Months to avoid: Jan, Feb.
Month by month
- JanuaryAvoidListed as a month to avoid: Jan–Feb (cold, snow).32 °C (90 °F) / 16 °C (61 °F), 8 rain days90 °F (32 °C) / 61 °F (16 °C), 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jan–Feb (cold, snow).36 °C (97 °F) / 20 °C (68 °F), 7 rain days97 °F (36 °C) / 68 °F (20 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (May–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.48 °C (118 °F) / 30 °C (86 °F), 6 rain days118 °F (48 °C) / 86 °F (30 °C), 6 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Oct). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.60 °C (140 °F) / 40 °C (104 °F), 5 rain days140 °F (60 °C) / 104 °F (40 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Waterloo, Iowa's best window: May–Oct.71 °C (160 °F) / 50 °C (122 °F), 4 rain days160 °F (71 °C) / 122 °F (50 °C), 4 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Waterloo, Iowa's best window: May–Oct.80 °C (176 °F) / 60 °C (140 °F), 3 rain days176 °F (80 °C) / 140 °F (60 °C), 3 rain daysCrowds: High
- JulyGreatInside Waterloo, Iowa's best window: May–Oct.86 °C (187 °F) / 66 °C (151 °F), 2 rain days187 °F (86 °C) / 151 °F (66 °C), 2 rain daysCrowds: High · 1 festival or holiday
- AugustGreatInside Waterloo, Iowa's best window: May–Oct.85 °C (185 °F) / 65 °C (149 °F), 3 rain days185 °F (85 °C) / 149 °F (65 °C), 3 rain daysCrowds: High
- SeptemberGreatInside Waterloo, Iowa's best window: May–Oct.78 °C (172 °F) / 58 °C (136 °F), 5 rain days172 °F (78 °C) / 136 °F (58 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Waterloo, Iowa's best window: May–Oct.66 °C (151 °F) / 46 °C (115 °F), 6 rain days151 °F (66 °C) / 115 °F (46 °C), 6 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.53 °C (127 °F) / 35 °C (95 °F), 7 rain days127 °F (53 °C) / 95 °F (35 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- DecemberMixedOutside the best window (May–Oct). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.38 °C (100 °F) / 22 °C (72 °F), 8 rain days100 °F (38 °C) / 72 °F (22 °C), 8 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Waterloo, Iowa, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 71 °C (160 °F)160 °F (71 °C)
Jun: 80 °C (176 °F)176 °F (80 °C)
Night low
May: 50 °C (122 °F)122 °F (50 °C)
Jun: 60 °C (140 °F)140 °F (60 °C)
Rain days
May: 4
Jun: 3 (better)
Crowds
May: Medium
Jun: High
Prices
May: Medium
Jun: High
Festivals listed
May: 1
Jun: 0
May: Inside Waterloo, Iowa's best window: May–Oct.
June: Inside Waterloo, Iowa's best window: May–Oct.
Waterloo, Iowa: figures are long-term averages from this guide, not a forecast.