Climate Lacon - Illinois
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 34 | 39 | 51 | 65 | 75 | 84 |
| Average low in ºF Av. low Lo | 19 | 22 | 32 | 42 | 52 | 61 |
| Av. precipitation in inch Av. precip. Pre. | 1.92 | 1.84 | 3.05 | 3.71 | 4.41 | 3.86 |
| Av. snowfall in inch Snowfall Sn | 7 | 5 | 3 | 1 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 87 | 86 | 79 | 67 | 52 | 37 |
| Average low in ºF Av. low Lo | 65 | 63 | 55 | 44 | 34 | 22 |
| Av. precipitation in inch Av. precip. Pre. | 3.72 | 3.56 | 3.19 | 3.11 | 3.17 | 2.29 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 1 | 6 |
What is the average weather in Lacon, Illinois?
Lacon experiences a humid continental climate, marked by a very large seasonal temperature contrast. Summers are hot, while winters are cold and bring regular snowfall. The area is fairly wet, with precipitation spread relatively evenly throughout the year, though spring tends to be wetter and winter is the driest season.
Lacon Climate Graph - Illinois Climate Chart
Daily normals Lacon - Illinois - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 34.8 | 19.8 | 0.07 | 0.07 | 0.20 | 0.20 |
| 2 Jan | 34.6 | 19.6 | 0.14 | 0.14 | 0.50 | 0.50 |
| 3 Jan | 34.5 | 19.5 | 0.22 | 0.22 | 0.70 | 0.70 |
| 4 Jan | 34.4 | 19.3 | 0.29 | 0.29 | 0.90 | 0.90 |
| 5 Jan | 34.3 | 19.1 | 0.36 | 0.36 | 1.20 | 1.20 |
| 6 Jan | 34.2 | 18.9 | 0.43 | 0.43 | 1.40 | 1.40 |
| 7 Jan | 34.0 | 18.8 | 0.50 | 0.50 | 1.70 | 1.70 |
| 8 Jan | 34.0 | 18.6 | 0.57 | 0.57 | 1.90 | 1.90 |
| 9 Jan | 33.9 | 18.4 | 0.65 | 0.65 | 2.20 | 2.20 |
| 10 Jan | 33.8 | 18.3 | 0.72 | 0.72 | 2.40 | 2.40 |
| 11 Jan | 33.7 | 18.1 | 0.80 | 0.80 | 2.70 | 2.70 |
| 12 Jan | 33.6 | 18.0 | 0.87 | 0.87 | 3.00 | 3.00 |
| 13 Jan | 33.6 | 17.9 | 0.94 | 0.94 | 3.20 | 3.20 |
| 14 Jan | 33.5 | 17.8 | 1.00 | 1.00 | 3.50 | 3.50 |
| 15 Jan | 33.5 | 17.7 | 1.07 | 1.07 | 3.80 | 3.80 |
| 16 Jan | 33.4 | 17.6 | 1.14 | 1.14 | 4.10 | 4.10 |
| 17 Jan | 33.4 | 17.5 | 1.22 | 1.22 | 4.30 | 4.30 |
| 18 Jan | 33.4 | 17.4 | 1.29 | 1.29 | 4.60 | 4.60 |
| 19 Jan | 33.4 | 17.3 | 1.35 | 1.35 | 4.90 | 4.90 |
| 20 Jan | 33.4 | 17.3 | 1.42 | 1.42 | 5.20 | 5.20 |
| 21 Jan | 33.4 | 17.2 | 1.48 | 1.48 | 5.40 | 5.40 |
| 22 Jan | 33.4 | 17.2 | 1.55 | 1.55 | 5.70 | 5.70 |
| 23 Jan | 33.4 | 17.2 | 1.61 | 1.61 | 6.00 | 6.00 |
| 24 Jan | 33.5 | 17.2 | 1.67 | 1.67 | 6.30 | 6.30 |
| 25 Jan | 33.6 | 17.3 | 1.73 | 1.73 | 6.60 | 6.60 |
| 26 Jan | 33.6 | 17.3 | 1.79 | 1.79 | 6.80 | 6.80 |
| 27 Jan | 33.7 | 17.4 | 1.84 | 1.84 | 7.10 | 7.10 |
| 28 Jan | 33.8 | 17.4 | 1.90 | 1.90 | 7.40 | 7.40 |
| 29 Jan | 33.9 | 17.5 | 1.96 | 1.96 | 7.60 | 7.60 |
| 30 Jan | 34.0 | 17.6 | 2.01 | 2.01 | 7.90 | 7.90 |
| 31 Jan | 34.2 | 17.7 | 2.07 | 2.07 | 8.10 | 8.10 |
Weather history Lacon - September 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Sep | - | - | 0.00 | 0.00 | 0.0 |
| 02 Sep | - | - | 0.00 | 0.00 | 0.0 |
| 03 Sep | - | - | 0.00 | 0.00 | 0.0 |
| 04 Sep | - | - | 0.00 | 0.00 | 0.0 |
| 05 Sep | - | - | - | - | - |
| 06 Sep | - | - | - | - | - |
| 07 Sep | - | - | - | - | - |
| 08 Sep | - | - | - | - | - |
| 09 Sep | - | - | - | - | - |
| 10 Sep | - | - | - | - | - |
| 11 Sep | - | - | - | - | - |
| 12 Sep | - | - | - | - | - |
| 13 Sep | - | - | - | - | - |
| 14 Sep | - | - | - | - | - |
| 15 Sep | - | - | - | - | - |
| 16 Sep | - | - | - | - | - |
| 17 Sep | - | - | - | - | - |
| 18 Sep | - | - | - | - | - |
| 19 Sep | - | - | - | - | - |
| 20 Sep | - | - | - | - | - |
| 21 Sep | - | - | - | - | - |
| 22 Sep | - | - | - | - | - |
| 23 Sep | - | - | - | - | - |
| 24 Sep | - | - | - | - | - |
| 25 Sep | - | - | - | - | - |
| 26 Sep | - | - | - | - | - |
| 27 Sep | - | - | - | - | - |
| 28 Sep | - | - | - | - | - |
| 29 Sep | - | - | - | - | - |
| 30 Sep | - | - | - | - | - |
Past weather Lacon
| Sep 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | - ºF | 34 ºF | |
| Average low temperature Av. low temp. | - ºF | 19 ºF | |
| Total precipitation Total precip. | 0.00 inch | 1.92 inch | |
| Total snowfall Total snowfall | 0.00 inch | 7 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 September 2026 incomplete - Missing data
Geo Lacon - Illinois
| Country | United States | |
|---|---|---|
| State | Illinois | |
| County | Marshall | |
| City | Lacon | |
| Zip Code | 61540 | |
| Longitude | -89.39 dec. degr. | |
| Latitude | 41.02 dec. degr. | |
| Altitude - Elevation | 554ft | |
| ICAO | - | |
| IATA | - |
Date and Time Lacon - Illinois
| Local Time | 10:06 PM | |
|---|---|---|
| Sunrise | 06:31 AM | |
| Sunset | 07:18 PM | |
| Day/Night | Night | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Lacon - Illinois
USGS National Map — Open interactive map
Lacon weather averages
| Annual high temperature | 63ºF |
| Annual low temperature | 43ºF |
| Average annual precip. | 37.83 inch |
| Av. annual snowfall | 23 inch |
Station Data
Monthly averages Lacon
Longitude: -89.3864, Latitude: 41.0193
Average weather Lacon, IL - 61540
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, ...