Climate Decatur - Indiana
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 33 | 36 | 47 | 60 | 71 | 81 |
| Average low in ºF Av. low Lo | 17 | 19 | 28 | 39 | 49 | 60 |
| Av. precipitation in inch Av. precip. Pre. | 2.05 | 1.91 | 2.51 | 3.47 | 4.30 | 4.09 |
| Av. snowfall in inch Snowfall Sn | 8 | 7 | 4 | 1 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 84 | 82 | 76 | 64 | 50 | 36 |
| Average low in ºF Av. low Lo | 62 | 60 | 52 | 41 | 32 | 22 |
| Av. precipitation in inch Av. precip. Pre. | 4.13 | 3.35 | 2.82 | 2.78 | 2.98 | 2.61 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 0 | 1 | 7 |
What is the average weather in Decatur, Indiana?
Decatur experiences a humid continental climate, marked by a very large seasonal temperature contrast. Summers are warm, while winters are cold and bring regular snowfall. Precipitation is fairly wet overall, with a moderate pattern of wetter conditions in summer, and winter moisture often arriving as snow.
Decatur Climate Graph - Indiana Climate Chart
Daily normals Decatur - Indiana - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 34.1 | 20.3 | 0.09 | 0.09 | 0.20 | 0.20 |
| 2 Jan | 34.0 | 20.1 | 0.18 | 0.18 | 0.50 | 0.50 |
| 3 Jan | 33.8 | 19.9 | 0.28 | 0.28 | 0.80 | 0.80 |
| 4 Jan | 33.7 | 19.7 | 0.37 | 0.37 | 1.00 | 1.00 |
| 5 Jan | 33.6 | 19.5 | 0.46 | 0.46 | 1.30 | 1.30 |
| 6 Jan | 33.5 | 19.3 | 0.56 | 0.56 | 1.60 | 1.60 |
| 7 Jan | 33.4 | 19.1 | 0.65 | 0.65 | 1.90 | 1.90 |
| 8 Jan | 33.3 | 18.9 | 0.74 | 0.74 | 2.10 | 2.10 |
| 9 Jan | 33.2 | 18.8 | 0.83 | 0.83 | 2.40 | 2.40 |
| 10 Jan | 33.1 | 18.6 | 0.92 | 0.92 | 2.70 | 2.70 |
| 11 Jan | 33.1 | 18.5 | 1.01 | 1.01 | 3.00 | 3.00 |
| 12 Jan | 33.0 | 18.3 | 1.10 | 1.10 | 3.30 | 3.30 |
| 13 Jan | 32.9 | 18.2 | 1.18 | 1.18 | 3.60 | 3.60 |
| 14 Jan | 32.9 | 18.1 | 1.26 | 1.26 | 3.90 | 3.90 |
| 15 Jan | 32.8 | 18.0 | 1.34 | 1.34 | 4.20 | 4.20 |
| 16 Jan | 32.8 | 17.9 | 1.42 | 1.42 | 4.60 | 4.60 |
| 17 Jan | 32.8 | 17.8 | 1.50 | 1.50 | 4.90 | 4.90 |
| 18 Jan | 32.8 | 17.7 | 1.58 | 1.58 | 5.20 | 5.20 |
| 19 Jan | 32.7 | 17.7 | 1.66 | 1.66 | 5.50 | 5.50 |
| 20 Jan | 32.7 | 17.6 | 1.73 | 1.73 | 5.80 | 5.80 |
| 21 Jan | 32.7 | 17.6 | 1.80 | 1.80 | 6.20 | 6.20 |
| 22 Jan | 32.7 | 17.5 | 1.88 | 1.88 | 6.50 | 6.50 |
| 23 Jan | 32.8 | 17.5 | 1.95 | 1.95 | 6.80 | 6.80 |
| 24 Jan | 32.8 | 17.5 | 2.03 | 2.03 | 7.10 | 7.10 |
| 25 Jan | 32.8 | 17.5 | 2.10 | 2.10 | 7.40 | 7.40 |
| 26 Jan | 32.8 | 17.6 | 2.18 | 2.18 | 7.70 | 7.70 |
| 27 Jan | 32.9 | 17.6 | 2.24 | 2.24 | 8.00 | 8.00 |
| 28 Jan | 33.0 | 17.6 | 2.31 | 2.31 | 8.30 | 8.30 |
| 29 Jan | 33.0 | 17.7 | 2.38 | 2.38 | 8.60 | 8.60 |
| 30 Jan | 33.1 | 17.8 | 2.44 | 2.44 | 8.90 | 8.90 |
| 31 Jan | 33.2 | 17.8 | 2.51 | 2.51 | 9.20 | 9.20 |
Weather history Decatur - September 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Sep | 89.1 | 72.0 | 0.01 | 0.00 | 0.0 |
| 02 Sep | 91.0 | 73.9 | 0.00 | 0.00 | 0.0 |
| 03 Sep | 93.9 | 73.0 | 0.00 | 0.00 | 0.0 |
| 04 Sep | 93.9 | 69.1 | 0.27 | 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 | - | - | - | - | - |
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| 27 Sep | - | - | - | - | - |
| 28 Sep | - | - | - | - | - |
| 29 Sep | - | - | - | - | - |
| 30 Sep | - | - | - | - | - |
Past weather Decatur
| Sep 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 92.0 ºF | 33 ºF | |
| Average low temperature Av. low temp. | 72.0 ºF | 17 ºF | |
| Total precipitation Total precip. | 0.28 inch | 2.05 inch | |
| Total snowfall Total snowfall | 0.00 inch | 8 inch | |
| Highest max temperature Highest max temp. | 93.9 ºF | - | |
| Lowest max temperature Lowest max temp. | 89.1 ºF | - | |
| Highest min temperature Highest min temp. | 73.9 ºF | - | |
| Lowest min temperature Lowest min temp. | 69.1 ºF | - | |
Past weather September 2026 incomplete - Missing data
Geo Decatur - Indiana
| Country | United States | |
|---|---|---|
| State | Indiana | |
| County | - | |
| City | Decatur | |
| Zip Code | 46733 | |
| Longitude | -84.93 dec. degr. | |
| Latitude | 40.83 dec. degr. | |
| Altitude - Elevation | 804ft | |
| ICAO | - | |
| IATA | - |
Date and Time Decatur - Indiana
| Local Time | 09:31 AM | |
|---|---|---|
| Sunrise | 07:19 AM | |
| Sunset | 07:50 PM | |
| Day/Night | Day | |
| Timezone | Eastern Daylight Time | |
| Timezone DB | America - Indiana - Indianapolis |
Map of Decatur - Indiana
USGS National Map — Open interactive map
Decatur weather averages
| Annual high temperature | 60ºF |
| Annual low temperature | 40ºF |
| Average annual precip. | 37 inch |
| Av. annual snowfall | 28 inch |
Station Data
Monthly averages Decatur
Longitude: -84.9291, Latitude: 40.8306
Average weather Decatur, IN - 46733
Monthly: 1991-2020 normals
History: 2008-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...