Waterloo, Iowa Weather Forecast
Today in Waterloo: clear skies with a high near 83°F and a low around 59°F. Rain chance 0%. Best chance of rain is Thursday at 57%. Cooling trend: highs fall from 83°F today to 68°F by Wednesday.
Forecast updated 9:05 PM CDT, Oct 11
Active Weather Alerts
7-Day Forecast for Waterloo
Today 10/11
83°/59°
0%
Mon 10/12
86°/67°
4%
Tue 10/13
75°/61°
21%
Wed 10/14
68°/57°
25%
Thu 10/15
63°/54°
57%
Fri 10/16
56°/43°
17%
Sat 10/17
56°/36°
0%
Next 24 Hours
| Now | 11 PM | Mon12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  |  | | | | | | | | | | | | | | | | | | | | |  | |
| Temp | 71° | 71° | 70° | 70° | 70° | 69° | 69° | 68° | 67° | 67° | 69° | 71° | 74° | 78° | 81° | 83° | 85° | 86° | 86° | 86° | 84° | 80° | 78° | 77° |
| Rain | 0% | 0% | 1% | 1% | 1% | 2% | 2% | 2% | 2% | 2% | 2% | 2% | 3% | 3% | 4% | 4% | 4% | 3% | 4% | 4% | 3% | 2% | 2% | 1% |
| Wind | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | SSW 10 | SSW 11 | SSW 12 | SSW 12 | SSW 13 | SSW 14 | SSW 14 | SSW 15 | SSW 13 | SSW 12 | SSW 11 | SSW 11 | SW 11 |
Growing Conditions
Growing degree days
3,307
since Apr 1, base 50°F
Rain, last 30 days
4.58 in
model analysis
Rain, year to date
36.41 in
since Jan 1
2-inch soil temperature
66°F
yesterday, daily average
Reference ET, last 7 days
0.97 in
FAO-56 grass reference
Through Oct 10. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Waterloo →
Current Stats & Observations
NWS Forecast
About Waterloo Weather
Waterloo sits at about 892 feet above sea level in Black Hawk County, Iowa. About 111,631 people live in the Waterloo area. Official forecasts and warnings for the area come from the National Weather Service DMX office, and the nearest NEXRAD radar site is KDMX. The city is in USDA plant hardiness zone 5a, where the coldest winter night typically falls between -20 to -15°F. Over the past ten years the last spring freeze has come around Apr 24 and the first fall freeze around Oct 24.
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