Waterloo, IA weather and climate in 2024
Day
0 °C
Night
-9 °C
Sea
0 °C
Precipitation
37 mm
in month
Rainy days
8 days
in month
Daylight
9 hours
average
Sunshine
4 hours
average
Humidity
77 %
Day
0 °C
Night
-9 °C
Sea
0 °C
Precipitation
37 mm
in month
Rainy days
8 days
in month
Daylight
9 hours
average
Sunshine
4 hours
average
Humidity
77 %
Overview: Waterloo, IA
Weather charts for Waterloo, IA
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Weather overview for Waterloo, IA
Weather overview
Waterloo, IA (United States of America) in general has a mild continental climate. The day temperatures range from -2 °C (28 °F) in January to 30 °C (85 °F) in July. Temperatures during the night go from -12 °C (10 °F) in January to 18 °C (65 °F) in July. The driest month is February with just 7 days of rain, on the contrary, the month when it rains the most is May with 12 days of rain.
January weather
The number of rainy days starts to descent, its value is 7 days in Waterloo, IA, while the minimum of the rainfall amount can be noticed in this month. The day temperature is on its minimum, the value of this measure is -2 °C (28 °F), and the minimum of the night temperature can be noticed too, its value is -12 °C (10 °F). The number of sun hours (without clouds) rise's start could be observed, with its value of 5 hours.
February weather
The beginning of the rise of the day temperature could be noticed, the value of this measure is 0 °C (33 °F) in Waterloo, IA, and the night temperature starts to rise as well in February. The beginning of the rise of the rainfall amount could be noticed, while the minimum of the number of rainy days can be noticed, with its value being 7 days. The rise of the number of sun hours (without clouds) can be observed, with its value being 6 hours.
March weather
The day temperature continues to rise, with its value being 8 °C (46 °F) in Waterloo, IA, and the rise of the night temperature can be observed too, its value is -3 °C (27 °F). The rise of the rainfall amount can be observed, its value is 55 mm (2.17 in), while the beginning of the rise of the number of rainy days could be noticed, with its value of 9 days. The rise of the number of sun hours (without clouds) can be observed, with its value of 7 hours.
April weather
The number of rainy days rises similarly to the previous month, with its value being 11 days in Waterloo, IA, and the rainfall amount rises similarly to the previous month too, with its value being 93 mm (3.64 in). The rise of the day temperature can be observed, with its value being 16 °C (61 °F), and the night temperature continues to rise as well, the value of this measure is 4 °C (38 °F). The maximum of the wind speed is observable, with its value being 5. The minimum of the humidity is observable in April.
May weather
The rise of the day temperature can be observed, its value is 22 °C (72 °F) in Waterloo, IA, and the night temperature rises similarly to the previous month as well, with its value being 10 °C (49 °F). The tourist season slowly starts. The rise of the rainfall amount can be observed, with its value of 113 mm (4.46 in), while the maximum of the number of rainy days is observable in May. The number of sun hours (without clouds) rises similarly to the previous month, its value is 9 hours.
June weather
The tourist season is close to its peak in June in Waterloo, IA. The day temperature rises similarly to the previous month, with its value of 27 °C (81 °F), and the night temperature continues to rise as well, its value is 15 °C (59 °F). The rise of the number of sun hours (without clouds) can be observed, its value is 10 hours. The day length is on its maximum, the value of this measure is 15 hours. The maximum of the rainfall amount is observable, with its value being 126 mm (4.94 in).
July weather
The maximum of the day temperature can be noticed, with its value of 30 °C (85 °F) in Waterloo, IA, and the maximum of the night temperature can be noticed too in July. The number of rainy days descent's start could be observed, the value of this measure is 10 days. The tourist season is close to its peak. The maximum of the number of sun hours (without clouds) can be noticed, its value is 10 hours.
August weather
The tourist season continues in Waterloo, IA. The day temperature starts to descent, its value is 28 °C (83 °F), and the beginning of the descent of the night temperature could be noticed as well, its value is 17 °C (62 °F). The rainfall amount starts to descent in August. The minimum of the wind speed is observable, its value is 3. The number of sun hours (without clouds) descent's start could be observed.
September weather
The descent of the day temperature can be observed, the value of this measure is 24 °C (76 °F) in Waterloo, IA, and the night temperature descents similarly to the previous month as well, its value is 11 °C (52 °F). The tourist season is close to its peak. The rainfall amount continues to descent, while the number of rainy days starts to descent. The number of sun hours (without clouds) continues to descent, with its value being 8 hours.
October weather
The number of rainy days descents similarly to the previous month, the value of this measure is 8 days in Waterloo, IA, and the rainfall amount continues to descent too, its value is 66 mm (2.60 in). The descent of the day temperature can be observed, with its value being 17 °C (62 °F), and the night temperature descents similarly to the previous month as well, its value is 4 °C (40 °F). The descent of the number of sun hours (without clouds) can be observed, its value is 7 hours.
November weather
The number of rainy days descents similarly to the previous month, with its value of 8 days in Waterloo, IA, and the descent of the rainfall amount can be observed as well, its value is 51 mm (1.99 in). The day temperature descents similarly to the previous month, with its value being 8 °C (46 °F), and the descent of the night temperature can be observed as well, its value is -2 °C (28 °F). The number of sun hours (without clouds) continues to descent, the value of this measure is 4 hours.
December weather
The rainfall amount descents similarly to the previous month, with its value being 37 mm (1.44 in) in Waterloo, IA. The day temperature descents similarly to the previous month, and the night temperature continues to descent as well, the value of this measure is -9 °C (15 °F). The minimum of the number of sun hours (without clouds) can be noticed. The minimum of the day length is observable. The humidity reaches its maximum in December.
FAQs
How many hours of sun to expect in Waterloo, IA in April?
In Waterloo, IA in April, you can expect around 8 hours of sunshine.
What is the night temperature in Waterloo, IA in May?
The average night temperature in May in Waterloo, IA is 10 °C (49 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating. An increase of 6 °C (43 °F) compared to the previous month.
Is there a wet season in Waterloo, IA in June?
No, there is no wet season in June in Waterloo, IA - you can expect 12 days of rain during the month.
What temperature can I expect during the day in Waterloo, IA in July?
In Waterloo, IA in July, the average daily temperatures will be 30 °C (85 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. This value is 2 °C (36 °F) higher than last month. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
Is it hot in August in Waterloo, IA?
In Waterloo, IA in August, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How many days of precipitation on average can I expect in Waterloo, IA in September?
There are 9 days, which are rainy in Waterloo, IA in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.2 days of the week, or in general - 31 % days.
Is October a good month to visit Waterloo, IA?
Waterloo, IA can be visited in October - the weather will be moderate. A relatively low temperature of 17 °C (62 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The night temperature of 4 °C (40 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.