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Greencastle weather in numbers
from 30 years of measured normals
Greencastle swings 60°F across the year, from 82°F highs in July to 22°F lows in February, and May is usually the wettest month in a year that brings about 45 in of precipitation.
Warmest month
July
82°F average high
Coldest month
February
22°F average low
Wettest month
May
45 in a year
Below freezing
3 months
January, February and December
Comfortable
3 months
April, September and October
Residents
10,000
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The weather map: all three models at once
NWS, American, European side by side around Greencastle and nearby towns.Live rain radar →
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Greencastle hourly forecast: next 14 hours
consensus of the three models
Rain in the next 24 hours, model by model
each model's own hourly precipitation, side by side
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Greencastle 10-day forecast, out to 14 days
where the models agree, and where they split
Greencastle, Indiana (IN) is at its warmest in Jul (average highs near 82°F) and coldest in Feb (lows around 22°F), with roughly 45 in of precipitation across the year. Below, compare what NWS, American, European forecast for Greencastle right now, and see exactly where they disagree.
average daytime high and overnight low across a typical year (1991-2020)
Jan
36°
23°
Feb
42°
22°
Mar
51°
32°
Apr
63°
43°
May
72°
52°
Jun
81°
61°
Jul
82°
64°
Aug
81°
64°
Sep
76°
57°
Oct
64°
46°
Nov
50°
35°
Dec
40°
26°
Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.
How Greencastle's weather has changed since 1995
30 years of daily data, 1995-2024, shown as change
+1.6°F
Around Greencastle, 2015-2024 averaged 1.6°F warmer than 1995-2004. 5 of the 10 warmest years since 1995 fall in the last ten, and the warmest was 2024.
1995each stripe is one year2024
cooler than averagearound averagewarmer than average
Days above 86°F
6 more days a year
2015-2024 against 1995-2004. Within the normal year-to-year swing
Frost nights
7 fewer nights a year
2015-2024 against 1995-2004, below 32°F. Within the normal year-to-year swing
Average wind
−2%
2015-2024 against 1995-2004. Within the normal year-to-year swing
Bars: each year against the area's 30-year average. Dashed lines: the average of the first and the last ten years.
See the numbers year by year
Year
Temp vs average
Days >86°F vs avg
Frost nights vs avg
Wind vs avg
1995
−1.1°F
+2
+10
−3%
1996
−2.7°F
−6
+20
+5%
1997
−2.2°F
−9
+18
+3%
1998
+1.8°F
−12
−25
−3%
1999
+0.7°F
+24
−1
+3%
2000
−1.3°F
−13
+7
−0%
2001
+0.5°F
+9
−7
−3%
2002
+0.1°F
+14
+2
+3%
2003
−1.5°F
−16
+6
+3%
2004
−0.4°F
−28
−7
+3%
2005
+0.3°F
+16
−0
−5%
2006
+0.5°F
−7
−1
−0%
2007
+0.9°F
+19
+6
−0%
2008
−2.0°F
−29
+15
+5%
2009
−1.5°F
−30
−2
−0%
2010
+0.3°F
+9
+1
−3%
2011
+0.3°F
+12
−9
+3%
2012
+2.7°F
+35
−12
−0%
2013
−1.7°F
−8
+21
−0%
2014
−3.1°F
−22
+19
−0%
2015
±0.0°F
−22
−13
−3%
2016
+1.4°F
+3
−0
−3%
2017
+1.8°F
+0
−20
+3%
2018
−0.2°F
+2
+16
−3%
2019
±0.0°F
−8
+6
−0%
2020
+0.5°F
−4
−0
−3%
2021
+0.9°F
+3
+2
−3%
2022
±0.0°F
+4
+3
+3%
2023
+2.3°F
+20
−15
−3%
2024
+3.2°F
+30
−28
−0%
Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Greencastle, not a weather station, and a square that takes in sea or a large lake runs milder than the city itself. That is why this section shows change against the square's own 30-year average rather than counts you could compare with a local station. Rain and snow are left out because their long-term record in this dataset is not consistent over time. "Within the normal year-to-year swing" means the change is smaller than the usual differences between single years.
Which forecast is most accurate in the US?
CheckWeather Score, graded against the weather that actually happened
Provider
CheckWeather-score
Temp
Wind
Rain
Run by
European ★ Best
93
/100rank #1
91±0.9°F
97±1.1 mph
9396% hit
ECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American
82
/100rank #2
83±1.7°F
94±2.0 mph
7184% hit
NOAA / NCEP (United States)College Park, Maryland, USA
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Common questions
What's the weather in Greencastle today?
On this page we show what NWS, American, European each forecast for Greencastle today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Greencastle today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Greencastle and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Greencastle?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Greencastle forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Greencastle?
July is typically the warmest month in Greencastle, with average highs around 82°F.
How cold does Greencastle get?
The coldest month in Greencastle is February, when overnight lows average about 22°F.
How much rain does Greencastle get?
Greencastle sees roughly 45 in of precipitation a year, with May usually the wettest month.
Is Greencastle getting warmer?
Yes. In NASA's reanalysis for the area around Greencastle, 2015-2024 averaged 1.6°F warmer than 1995-2004.
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