Weather
Indiana Halloween Weather: Indy May Reach 75° on Oct 31
Indianapolis, IN – Halloween could feel more like a warm September afternoon than the final day of October across Indianapolis this year, with temperatures expected to climb to approximately 75 degree
By Nora Whitfield · 2026-10-25T09:49:41.159Z
Indianapolis, IN – Halloween could feel more like a warm September afternoon than the final day of October across Indianapolis this year, with temperatures expected to climb to approximately 75 degrees Saturday, Oct. 31. That would place the afternoon high 15 degrees above the city's historical Halloween average, creating unusually comfortable conditions for families preparing costumes, neighborhood celebrations and outdoor activities. A slight chance of showers remains in the outlook, although much of the preceding week is expected to feature sunshine and temperatures in the 70s.
According to the National Weather Service in Indianapolis, the city's average Halloween high is 60 degrees, while the average low is 42 degrees, based on historical temperature records dating to 1871. Saturday's projected high of 75 degrees would be considerably warmer than normal, although still below the city's record Halloween high of 82 degrees, established in 1950. The current forecast calls for partly sunny skies and a 20% chance of showers.
Halloween Temperatures Could Run 15 Degrees Above Normal The anticipated warmth follows several days of relatively consistent temperatures across central Indiana. Monday is expected to reach 75 degrees, followed by 73 Tuesday, 75 Wednesday and 78 Thursday. Friday continues the mild pattern with a high near 77 degrees, setting the stage for another warm afternoon Saturday. These temperatures suggest a prolonged stretch of above average late October warmth rather than a sudden, short lived temperature spike.
Historical records demonstrate how widely Halloween temperatures can vary in Indianapolis. The warmest Halloween reached 82 degrees in 1950, while the coldest daily high was just 35 degrees in both 1873 and 1878. The coldest Halloween low was 24 degrees, recorded in 1925 and 1988. By comparison, this year's projected afternoon temperature would fall within the warmer portion of the city's historical Halloween experience.
Historical Records Show Warm Halloweens Are Less Common National Weather Service climatological records show Indianapolis has experienced Halloween highs in the 70s on 26 occasions since 1871, while temperatures reached the 80s only twice. Highs in the 60s have been the most common, occurring 62 times in the historical dataset provided by the weather service. Another 34 Halloweens featured highs in the 50s, illustrating how frequently the holiday brings noticeably cooler conditions.
Rainfall is another consideration for Halloween planning. Measurable precipitation has occurred on approximately 35% of Halloweens in Indianapolis since 1871. The wettest Halloween produced 2.01 inches of precipitation in 2013, while the greatest recorded Halloween snowfall was 0.1 inch, occurring in both 1890 and 2014. This year's forecast does not indicate snow, and the listed precipitation probability for Saturday is only 20%.
What Families Can Expect Heading Into Saturday For families planning trick or treating, the mild afternoon outlook could make outdoor preparations more comfortable than usual. However, Saturday's forecast does not provide an evening temperature or hourly precipitation timing, meaning conditions during traditional trick or treating hours remain less certain. Parents should monitor updated forecasts before deciding whether children will need additional layers beneath their costumes.
Travel conditions also appear generally favorable during much of the preceding week, with no significant precipitation indicated in the supplied Indianapolis forecast through Friday. Mostly sunny or partly sunny skies dominate the outlook, and Thursday's southwest winds are expected to remain between 3 and 8 mph. Saturday's slight shower chance could produce isolated wet conditions, but the forecast does not establish widespread rainfall or significant travel disruptions.
With Halloween approaching, the biggest weather story may ultimately be the unusual warmth rather than storms or cold temperatures. The projected 75 degree high would make this a notably mild holiday compared with the city's long term average, although forecast details could still change before Saturday.
Would you prefer a warm 75 degree Halloween or the traditional crisp fall weather Indianapolis usually experiences?
Five Day Weather Outlook Tuesday 10/27: Partly sunny skies are expected across Indianapolis, with an afternoon high near 73 degrees and light south southeast winds. Tuesday night becomes mostly cloudy, with temperatures falling to approximately 53 degrees and light southeast winds.
Wednesday 10/28: Mostly sunny conditions will accompany a high near 75 degrees, with southwest winds around 5 to 7 mph developing during the afternoon. Wednesday night remains mostly clear, with temperatures settling near 53 degrees.
Thursday 10/29: Sunshine dominates the forecast as temperatures reach approximately 78 degrees, making Thursday the warmest day in the supplied outlook. Southwest winds of 3 to 8 mph are expected, followed by mostly clear skies and a low near 52 degrees.
Friday 10/30: Mostly sunny skies and an afternoon high near 77 degrees will continue the stretch of unusually mild late October weather. Friday night becomes mostly cloudy, with temperatures falling to approximately 56 degrees ahead of Halloween.
Saturday 10/31: Halloween is expected to bring partly sunny skies and a high near 75 degrees, approximately 15 degrees above the historical average. A 20% chance of showers remains in the forecast, while Saturday night's low has not been provided.
Extended Weather Outlook The supplied National Weather Service forecast extends through Saturday, Oct. 31. No official six to 10 day temperature or precipitation outlook for Indianapolis was included, so conditions beyond Halloween remain unspecified.