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Greencastle, IN 46135 Weather
Current conditions
Observed at Putnam County Regional Airport · 1 hr ago
Forecast
10-day-
Tonight
Clear. Low around 44, with temperatures rising to around 46 overnight. North wind around 2 mph.
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Thursday
Sunny, with a high near 72. North northeast wind 0 to 6 mph.
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Thursday Night
Clear, with a low around 45. East northeast wind 1 to 5 mph.
National Weather Service forecast updated 8 hrs ago.
Hourly
Hourly forecast- Now50°
- 2 AM48°
- 3 AM47°
- 4 AM46°
- 5 AM45°
- 6 AM44°
- 7 AM44°
- 8 AM44°
- 9 AM47°
- 10 AM56°
- 11 AM62°
- 12 PM65°
- 1 PM68°
- 2 PM70°
- 3 PM71°
- 4 PM72°
- 5 PM72°
- 6 PM70°
- 7 PM67°
- 8 PM62°
- 9 PM56°
- 10 PM54°
- 11 PM52°
- Fri12 AM52°
10-day forecast
Details- WedOct 21Sunny44°73°
- TodayOct 22Sunny45°72°
- FriOct 23Sunny45°70°
- SatOct 24Sunny44°71°
- SunOct 25Mostly Sunny47°73°
- MonOct 26Mostly Sunny47°73°
- TueOct 27Partly Sunny45°68°
- WedOct 28Sunny41°57°
- ThuOct 29Partly cloudy37°61°
- FriOct 30Cloudy0.03 in46°61°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Greencastle
More weather news-
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Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- ThuModerate
Terre Haute, IN reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyRockville, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Terre Haute 51 km
- Plainfield 41 km
- Brownsburg 46 km
- Fairfield Heights 46 km
- Avon 42 km
- Crawfordsville 44 km
- Lebanon 56 km
- Speedway 54 km
- Martinsville 45 km
- Mooresville 43 km
- Danville 32 km
- Brazil 26 km
Forecasters' discussion
From the National Weather Service office in IND, issued 4 hrs ago
Key Messages
- Dry yet pleasant fall weather will prevail through this weekend
- Daytime lows will be near normal with above normal highs through the period.
- Very small chances of rain next Tuesday, better chances late next week.
Forecast Update
Issued at 909 PM EDT Wed Oct 21 2026
Surface analysis late this evening shows strong high pressure stretching from the eastern Great Lakes across Indiana and Illinois to MO and Arkansas. GOES19 shows mostly clear skies across the state and winds were light to calm with dew points mainly in the 40s.
Aloft, strong ridging was in place across the Plains, extending north into Canada. This was providing NW flow aloft over Indiana and water vapor shows subsidence across the region.
Overall, another quiet and cool night will be in store as good radiational cooling conditions exist. Look for the clear skies to continue as lows fall into the 40s. HRRR fails to suggest much in the way of fog development. This still cannot be ruled out however due to expected low dew point depressions and calm winds. Ongoing forecast remains in good shape.
Ind Watches
None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.