Climate Olney - Illinois
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 38 | 43 | 54 | 66 | 75 | 84 |
| Average low in ºF Av. low Lo | 20 | 24 | 32 | 43 | 53 | 62 |
| Av. precipitation in inch Av. precip. Pre. | 3.05 | 2.73 | 4.34 | 4.33 | 5.83 | 4.19 |
| 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 | 87 | 87 | 80 | 68 | 55 | 41 |
| Average low in ºF Av. low Lo | 66 | 64 | 55 | 44 | 34 | 24 |
| Av. precipitation in inch Av. precip. Pre. | 4.33 | 3.20 | 3.07 | 3.99 | 4.48 | 3.88 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 0 | 3 |
What is the average weather in Olney, Illinois?
Olney 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 the wettest season.
Olney Climate Graph - Illinois Climate Chart
Daily normals Olney - Illinois - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 37.8 | 21.0 | 0.12 | 0.12 | 0.12 | 0.30 |
| 2 Jan | 37.7 | 20.9 | 0.20 | 0.20 | 0.20 | 0.50 |
| 3 Jan | 37.6 | 20.8 | 0.31 | 0.31 | 0.31 | 0.80 |
| 4 Jan | 37.5 | 20.7 | 0.39 | 0.39 | 0.39 | 1.00 |
| 5 Jan | 37.5 | 20.6 | 0.51 | 0.51 | 0.51 | 1.30 |
| 6 Jan | 37.5 | 20.5 | 0.59 | 0.59 | 0.59 | 1.50 |
| 7 Jan | 37.4 | 20.5 | 0.71 | 0.71 | 0.71 | 1.80 |
| 8 Jan | 37.4 | 20.4 | 0.79 | 0.79 | 0.79 | 2.00 |
| 9 Jan | 37.4 | 20.3 | 0.87 | 0.87 | 0.98 | 2.50 |
| 10 Jan | 37.4 | 20.3 | 0.98 | 0.98 | 1.10 | 2.80 |
| 11 Jan | 37.4 | 20.2 | 1.06 | 1.06 | 1.18 | 3.00 |
| 12 Jan | 37.4 | 20.2 | 1.14 | 1.14 | 1.30 | 3.30 |
| 13 Jan | 37.4 | 20.2 | 1.26 | 1.26 | 1.42 | 3.60 |
| 14 Jan | 37.4 | 20.1 | 1.34 | 1.34 | 1.50 | 3.80 |
| 15 Jan | 37.4 | 20.1 | 1.42 | 1.42 | 1.69 | 4.30 |
| 16 Jan | 37.5 | 20.1 | 1.54 | 1.54 | 1.81 | 4.60 |
| 17 Jan | 37.5 | 20.1 | 1.61 | 1.61 | 2.01 | 5.10 |
| 18 Jan | 37.6 | 20.1 | 1.73 | 1.73 | 2.09 | 5.30 |
| 19 Jan | 37.6 | 20.1 | 1.81 | 1.81 | 2.28 | 5.80 |
| 20 Jan | 37.7 | 20.1 | 1.93 | 1.93 | 2.40 | 6.10 |
| 21 Jan | 37.8 | 20.2 | 2.05 | 2.05 | 2.60 | 6.60 |
| 22 Jan | 37.9 | 20.2 | 2.13 | 2.13 | 2.72 | 6.90 |
| 23 Jan | 38.0 | 20.2 | 2.24 | 2.24 | 2.80 | 7.10 |
| 24 Jan | 38.1 | 20.3 | 2.32 | 2.32 | 2.99 | 7.60 |
| 25 Jan | 38.2 | 20.3 | 2.44 | 2.44 | 3.11 | 7.90 |
| 26 Jan | 38.3 | 20.4 | 2.52 | 2.52 | 3.31 | 8.40 |
| 27 Jan | 38.4 | 20.5 | 2.64 | 2.64 | 3.39 | 8.60 |
| 28 Jan | 38.6 | 20.6 | 2.76 | 2.76 | 3.50 | 8.90 |
| 29 Jan | 38.7 | 20.7 | 2.83 | 2.83 | 3.70 | 9.40 |
| 30 Jan | 38.9 | 20.8 | 2.95 | 2.95 | 3.82 | 9.70 |
| 31 Jan | 39.0 | 20.9 | 3.03 | 3.03 | 4.02 | 10.20 |
Weather history Olney - June 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Jun | 82.9 | 61.0 | 0.00 | 0.00 | 0.0 |
| 02 Jun | 84.0 | 61.0 | 0.00 | 0.00 | 0.0 |
| 03 Jun | 82.0 | 57.0 | 0.00 | 0.00 | 0.0 |
| 04 Jun | 80.1 | 60.1 | 0.00 | 0.00 | 0.0 |
| 05 Jun | 82.0 | 60.1 | 0.00 | 0.00 | 0.0 |
| 06 Jun | 87.1 | 64.0 | 0.00 | 0.00 | 0.0 |
| 07 Jun | 89.1 | 71.1 | 0.00 | 0.00 | 0.0 |
| 08 Jun | 89.1 | 72.0 | 0.00 | 0.00 | 0.0 |
| 09 Jun | 84.0 | 73.9 | 1.30 | 0.00 | 0.0 |
| 10 Jun | 91.0 | 73.9 | 0.00 | 0.00 | 0.0 |
| 11 Jun | - | - | - | - | - |
| 12 Jun | - | - | - | - | - |
| 13 Jun | - | - | - | - | - |
| 14 Jun | - | - | - | - | - |
| 15 Jun | - | - | - | - | - |
| 16 Jun | - | - | - | - | - |
| 17 Jun | 75.0 | 57.0 | 0.00 | 0.00 | 0.0 |
| 18 Jun | 82.9 | 57.0 | 0.73 | 0.00 | 0.0 |
| 19 Jun | 79.0 | 59.0 | 0.00 | 0.00 | 0.0 |
| 20 Jun | - | - | - | - | - |
| 21 Jun | - | - | - | - | - |
| 22 Jun | - | - | - | - | - |
| 23 Jun | - | - | - | - | - |
| 24 Jun | - | - | - | - | - |
| 25 Jun | - | - | - | - | - |
| 26 Jun | - | - | - | - | - |
| 27 Jun | - | - | - | - | - |
| 28 Jun | - | - | - | - | - |
| 29 Jun | - | - | - | - | - |
| 30 Jun | - | - | - | - | - |
Past weather Olney
| Jun 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 83.7 ºF | 38 ºF | |
| Average low temperature Av. low temp. | 63.6 ºF | 20 ºF | |
| Total precipitation Total precip. | 2.03 inch | 3.05 inch | |
| Total snowfall Total snowfall | 0.00 inch | 4 inch | |
| Highest max temperature Highest max temp. | 91.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 75.0 ºF | - | |
| Highest min temperature Highest min temp. | 73.9 ºF | - | |
| Lowest min temperature Lowest min temp. | 57.0 ºF | - | |
Past weather June 2026 incomplete - Missing data
Geo Olney - Illinois
| Country | United States | |
|---|---|---|
| State | Illinois | |
| County | Richland | |
| City | Olney | |
| Zip Code | 62450 | |
| Longitude | -88.09 dec. degr. | |
| Latitude | 38.73 dec. degr. | |
| Altitude - Elevation | 482ft | |
| ICAO | - | |
| IATA | - |
Date and Time Olney - Illinois
| Local Time | 11:51 AM | |
|---|---|---|
| Sunrise | 05:27 AM | |
| Sunset | 08:22 PM | |
| Day/Night | Day | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Olney - Illinois
USGS National Map — Open interactive map
Olney weather averages
| Annual high temperature | 65ºF |
| Annual low temperature | 43ºF |
| Average annual precip. | 47.42 inch |
| Av. annual snowfall | 11 inch |
Station Data
Monthly averages Olney
Longitude: -88.0853, Latitude: 38.7309
Average weather Olney, IL - 62450
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, ...