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 | 32.8 | 18.3 | 0.08 | 0.08 | 0.31 | 0.80 |
| 2 Jan | 32.7 | 18.2 | 0.16 | 0.16 | 0.51 | 1.30 |
| 3 Jan | 32.7 | 18.0 | 0.24 | 0.24 | 0.79 | 2.00 |
| 4 Jan | 32.6 | 17.9 | 0.31 | 0.31 | 0.98 | 2.50 |
| 5 Jan | 32.5 | 17.7 | 0.35 | 0.35 | 1.30 | 3.30 |
| 6 Jan | 32.5 | 17.6 | 0.43 | 0.43 | 1.50 | 3.80 |
| 7 Jan | 32.4 | 17.5 | 0.51 | 0.51 | 1.81 | 4.60 |
| 8 Jan | 32.4 | 17.4 | 0.59 | 0.59 | 2.09 | 5.30 |
| 9 Jan | 32.4 | 17.3 | 0.67 | 0.67 | 2.28 | 5.80 |
| 10 Jan | 32.3 | 17.2 | 0.71 | 0.71 | 2.60 | 6.60 |
| 11 Jan | 32.3 | 17.1 | 0.79 | 0.79 | 2.80 | 7.10 |
| 12 Jan | 32.3 | 17.0 | 0.87 | 0.87 | 3.11 | 7.90 |
| 13 Jan | 32.3 | 17.0 | 0.91 | 0.91 | 3.39 | 8.60 |
| 14 Jan | 32.3 | 16.9 | 0.98 | 0.98 | 3.58 | 9.10 |
| 15 Jan | 32.3 | 16.9 | 1.06 | 1.06 | 3.90 | 9.90 |
| 16 Jan | 32.3 | 16.8 | 1.10 | 1.10 | 4.09 | 10.40 |
| 17 Jan | 32.3 | 16.8 | 1.18 | 1.18 | 4.41 | 11.20 |
| 18 Jan | 32.3 | 16.7 | 1.26 | 1.26 | 4.69 | 11.90 |
| 19 Jan | 32.3 | 16.7 | 1.30 | 1.30 | 4.88 | 12.40 |
| 20 Jan | 32.3 | 16.7 | 1.38 | 1.38 | 5.20 | 13.20 |
| 21 Jan | 32.4 | 16.7 | 1.42 | 1.42 | 5.39 | 13.70 |
| 22 Jan | 32.4 | 16.7 | 1.50 | 1.50 | 5.71 | 14.50 |
| 23 Jan | 32.4 | 16.7 | 1.54 | 1.54 | 5.98 | 15.20 |
| 24 Jan | 32.5 | 16.7 | 1.61 | 1.61 | 6.18 | 15.70 |
| 25 Jan | 32.5 | 16.7 | 1.69 | 1.69 | 6.50 | 16.50 |
| 26 Jan | 32.6 | 16.7 | 1.73 | 1.73 | 6.69 | 17.00 |
| 27 Jan | 32.7 | 16.7 | 1.81 | 1.81 | 7.01 | 17.80 |
| 28 Jan | 32.7 | 16.8 | 1.85 | 1.85 | 7.20 | 18.30 |
| 29 Jan | 32.8 | 16.8 | 1.93 | 1.93 | 7.52 | 19.10 |
| 30 Jan | 32.9 | 16.9 | 2.01 | 2.01 | 7.72 | 19.60 |
| 31 Jan | 33.0 | 16.9 | 2.05 | 2.05 | 7.99 | 20.30 |
Weather history Decatur - May 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 May | 59.0 | 42.1 | 0.39 | 0.00 | - |
| 02 May | - | - | - | - | - |
| 03 May | 64.0 | 30.9 | 0.00 | 0.00 | 0.0 |
| 04 May | 61.0 | 41.0 | T | 0.00 | 0.0 |
| 05 May | 77.0 | 51.1 | 0.11 | 0.00 | 0.0 |
| 06 May | 60.1 | 43.0 | 0.76 | 0.00 | 0.0 |
| 07 May | - | - | - | - | - |
| 08 May | - | - | - | - | - |
| 09 May | - | - | - | - | - |
| 10 May | - | - | - | - | - |
| 11 May | - | - | - | - | - |
| 12 May | 70.0 | 39.0 | 0.00 | 0.00 | 0.0 |
| 13 May | 73.9 | 39.0 | 0.31 | 0.00 | 0.0 |
| 14 May | 57.0 | 42.1 | 0.00 | 0.00 | 0.0 |
| 15 May | - | - | - | - | - |
| 16 May | 66.9 | 42.1 | 0.00 | 0.00 | 0.0 |
| 17 May | 78.1 | 59.0 | 0.00 | 0.00 | 0.0 |
| 18 May | 86.0 | 63.0 | 0.00 | 0.00 | 0.0 |
| 19 May | 88.0 | 64.0 | 0.48 | 0.00 | 0.0 |
| 20 May | 84.9 | 60.1 | 0.75 | 0.00 | 0.0 |
| 21 May | 61.0 | 48.0 | 0.00 | 0.00 | 0.0 |
| 22 May | 64.0 | 46.9 | 0.00 | 0.00 | 0.0 |
| 23 May | - | - | - | - | - |
| 24 May | 64.0 | 54.0 | 0.04 | 0.00 | 0.0 |
| 25 May | 73.9 | 50.0 | 0.01 | 0.00 | 0.0 |
| 26 May | 75.9 | 52.0 | 0.00 | 0.00 | 0.0 |
| 27 May | 79.0 | 53.1 | 0.00 | 0.00 | 0.0 |
| 28 May | - | - | - | - | - |
| 29 May | 80.1 | 48.0 | 0.00 | 0.00 | 0.0 |
| 30 May | 81.0 | 48.0 | 0.00 | 0.00 | 0.0 |
| 31 May | 72.0 | 46.0 | 0.00 | 0.00 | 0.0 |
Past weather Decatur
| May 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 71.7 ºF | 33 ºF | |
| Average low temperature Av. low temp. | 48.3 ºF | 17 ºF | |
| Total precipitation Total precip. | 2.85 inch | 2.05 inch | |
| Total snowfall Total snowfall | 0.00 inch | 8 inch | |
| Highest max temperature Highest max temp. | 88.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 57.0 ºF | - | |
| Highest min temperature Highest min temp. | 64.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 30.9 ºF | - | |
Past weather May 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 | 02:31 PM | |
|---|---|---|
| Sunrise | 06:12 AM | |
| Sunset | 09:16 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, ...