Climate Waterloo - Illinois
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 39 | 44 | 55 | 67 | 76 | 84 |
| Average low in ºF Av. low Lo | 23 | 27 | 36 | 46 | 55 | 65 |
| Av. precipitation in inch Av. precip. Pre. | 2.45 | 2.53 | 3.30 | 4.09 | 4.93 | 4.22 |
| Av. snowfall in inch Snowfall Sn | 4 | 3 | 1 | 0 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 88 | 87 | 80 | 68 | 56 | 42 |
| Average low in ºF Av. low Lo | 68 | 66 | 59 | 48 | 38 | 27 |
| Av. precipitation in inch Av. precip. Pre. | 4.22 | 3.11 | 3.69 | 3.57 | 3.75 | 3.32 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 0 | 3 |
Waterloo Climate Graph - Illinois Climate Chart
Daily normals Waterloo - Illinois - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 39.1 | 23.7 | 0.08 | 0.08 | 0.12 | 0.30 |
| 2 Jan | 39.0 | 23.6 | 0.20 | 0.20 | 0.20 | 0.50 |
| 3 Jan | 38.9 | 23.6 | 0.28 | 0.28 | 0.31 | 0.80 |
| 4 Jan | 38.9 | 23.5 | 0.35 | 0.35 | 0.39 | 1.00 |
| 5 Jan | 38.8 | 23.4 | 0.43 | 0.43 | 0.51 | 1.30 |
| 6 Jan | 38.8 | 23.4 | 0.51 | 0.51 | 0.59 | 1.50 |
| 7 Jan | 38.8 | 23.3 | 0.59 | 0.59 | 0.71 | 1.80 |
| 8 Jan | 38.8 | 23.3 | 0.67 | 0.67 | 0.79 | 2.00 |
| 9 Jan | 38.8 | 23.2 | 0.75 | 0.75 | 0.98 | 2.50 |
| 10 Jan | 38.8 | 23.2 | 0.83 | 0.83 | 1.10 | 2.80 |
| 11 Jan | 38.8 | 23.2 | 0.91 | 0.91 | 1.18 | 3.00 |
| 12 Jan | 38.8 | 23.1 | 0.94 | 0.94 | 1.30 | 3.30 |
Weather history Waterloo - April 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 02 Apr | - | - | - | 0.00 | 0.0 |
| 03 Apr | - | - | - | 0.00 | 0.0 |
| 04 Apr | - | - | 1.30 | 0.00 | 0.0 |
| 05 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 06 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 07 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 08 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 09 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 10 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 11 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 12 Apr | - | - | T | 0.00 | 0.0 |
| 13 Apr | - | - | T | 0.00 | 0.0 |
| 14 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 15 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 16 Apr | - | - | 1.24 | 0.00 | 0.0 |
| 17 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 18 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 19 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 20 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 21 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 22 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 23 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 24 Apr | - | - | 0.77 | 0.00 | 0.0 |
| 25 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 26 Apr | - | - | 0.00 | 0.00 | 0.0 |
| 27 Apr | - | - | 0.26 | 0.00 | 0.0 |
| 28 Apr | - | - | 0.84 | 0.00 | 0.0 |
| 29 Apr | - | - | 0.58 | 0.00 | 0.0 |
| 30 Apr | - | - | 0.00 | 0.00 | 0.0 |
Past weather Waterloo
| Apr 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | - ºF | 39 ºF | |
| Average low temperature Av. low temp. | - ºF | 23 ºF | |
| Total precipitation Total precip. | 4.99 inch | 2.45 inch | |
| Total snowfall Total snowfall | 0.00 inch | 4 inch | |
| Highest max temperature Highest max temp. | - ºF | - | |
| Lowest max temperature Lowest max temp. | - ºF | - | |
| Highest min temperature Highest min temp. | - ºF | - | |
| Lowest min temperature Lowest min temp. | - ºF | - | |
Past weather April 2026 incomplete - Missing data
Geo Waterloo - Illinois
| Country | United States | |
|---|---|---|
| State | Illinois | |
| County | Monroe | |
| City | Waterloo | |
| Zip Code | 62298 | |
| Longitude | -90.15 dec. degr. | |
| Latitude | 38.33 dec. degr. | |
| Altitude - Elevation | 659ft | |
| ICAO | - | |
| IATA | - |
Date and Time Waterloo - Illinois
| Local Time | 09:52 PM | |
|---|---|---|
| Sunrise | 05:35 AM | |
| Sunset | 08:24 PM | |
| Day/Night | Night | |
| Timezone | Chicago -6:00 | |
| Timezone DB | America - Chicago |
Map of Waterloo - Illinois
USGS National Map — Open interactive map
Waterloo weather averages
| Annual high temperature | 65ºF |
| Annual low temperature | 47ºF |
| Average annual precip. | 43.18 inch |
| Av. annual snowfall | 11 inch |
Station Data
Monthly averages Waterloo
Longitude: -90.15, Latitude: 38.33
Average weather Waterloo, IL - 62298
Monthly: 1991-2020 normals
History: 2007-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...