Current Conditions

Zionsville, Indiana

68°F20°C

Light Rain

Wind

ESE 4 mph6 km/h

Humidity

96%

Cloud Cover

83%

As of Thursday, August 13, 2026 at 3:53 AM EDT

Today's Outlook

Day

Overcast and warm, with a high of 81°F27°C and morning low of 69°F20°C. Light wind from the SE around 5 mph8 km/h. 54% chance of light rain in the afternoon. Heavy, humid air.

Night

Overcast, with a low around 67°F20°C. Light wind from the ESE around 4 mph6 km/h. 56% chance of light rain in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Light Rain	High 81°F27°CFeels 85°F30°C	Low 67°F20°C	Precip 0.15 in3.9 mm56%	Cloud 93%	Wind SE 4 mph7 km/h	Thursday: Overcast and warm, with a high of 81°F27°C and morning low of 69°F20°C. Light wind from the SE around 5 mph8 km/h. 54% chance of light rain in the afternoon. Heavy, humid air. Thursday Night: Overcast, with a low around 67°F20°C. Light wind from the ESE around 4 mph6 km/h. 56% chance of light rain in the evening.
Rain	High 83°F28°CFeels 89°F31°C	Low 72°F22°C	Precip 0.68 in17.3 mm86%	Cloud 96%	Wind E 4 mph7 km/h	Friday: Overcast and warm, with a high of 83°F28°C and morning low of 72°F22°C. Light wind from the ESE around 4 mph7 km/h. 86% chance of rain throughout the day. Heavy, humid air. Friday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 4 mph7 km/h. 80% chance of rain throughout the night.
Rain	High 85°F29°CFeels 93°F34°C	Low 73°F23°C	Precip 0.46 in11.8 mm60%	Cloud 89%	Wind SSE 6 mph9 km/h	Saturday: Overcast and warm, with a high of 85°F29°C and morning low of 73°F23°C — feels like 93°F34°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 60% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 73°F23°C. Light wind from the SE around 5 mph8 km/h. 49% chance of light rain throughout the night.
Showers	High 89°F32°CFeels 100°F38°C	Low 77°F25°C	Precip 0.1 in2.5 mm33%	Cloud 63%	Wind W 7 mph12 km/h	Sunday: Mostly cloudy and hot, with a high of 89°F32°C and morning low of 77°F25°C — feels like 100°F38°C. Breezy from the W at 8 to 9 mph14 to 15 km/h. 23% chance of drizzle throughout the day. Heat risk in the afternoon. Sunday Night: Mostly cloudy, with a low around 77°F25°C. Light wind from the WSW around 6 mph10 km/h. 33% chance of showers throughout the night.
Showers	High 81°F27°CFeels 84°F29°C	Low 71°F22°C	Precip 0.18 in4.5 mm36%	Cloud 60%	Wind NNW 7 mph11 km/h	Monday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 72°F22°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h. 32% chance of showers throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 71°F22°C. Light wind from the NNW around 6 mph9 km/h. 36% chance of showers overnight.
Clear	High 83°F28°C	Low 64°F18°C	Precip 0 in0 mm—	Cloud 32%	Wind N 4 mph6 km/h	Tuesday: Partly cloudy and warm, with a high of 83°F28°C and morning low of 64°F18°C. Light wind from the NNW around 3 mph6 km/h. Tuesday Night: Partly cloudy, with a low around 64°F18°C. Light wind from the NNE around 4 mph6 km/h.
Showers	High 86°F30°CFeels 91°F33°C	Low 68°F20°C	Precip 0.09 in2.3 mm20%	Cloud 67%	Wind SSW 7 mph12 km/h	Wednesday: Mostly cloudy and hot, with a high of 86°F30°C and morning low of 69°F20°C. Breezy from the SSW at 8 to 9 mph13 to 15 km/h. 19% chance of drizzle throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 20% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	81°F27°C Feels 85°F30°C	67°F20°C	0.15 in3.9 mm· 56%	93%	Light Rain	SE 4 mph7 km/h
DayOvercast and warm, with a high of 81°F27°C and morning low of 69°F20°C. Light wind from the SE around 5 mph8 km/h. 54% chance of light rain in the afternoon. Heavy, humid air. NightOvercast, with a low around 67°F20°C. Light wind from the ESE around 4 mph6 km/h. 56% chance of light rain in the evening.
	FridayAug 14	83°F28°C Feels 89°F31°C	72°F22°C	0.68 in17.3 mm· 86%	96%	Rain	E 4 mph7 km/h
DayOvercast and warm, with a high of 83°F28°C and morning low of 72°F22°C. Light wind from the ESE around 4 mph7 km/h. 86% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 4 mph7 km/h. 80% chance of rain throughout the night.
	SaturdayAug 15	85°F29°C Feels 93°F34°C	73°F23°C	0.46 in11.8 mm· 60%	89%	Rain	SSE 6 mph9 km/h
DayOvercast and warm, with a high of 85°F29°C and morning low of 73°F23°C — feels like 93°F34°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 60% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 73°F23°C. Light wind from the SE around 5 mph8 km/h. 49% chance of light rain throughout the night.
	SundayAug 16	89°F32°C Feels 100°F38°C	77°F25°C	0.1 in2.5 mm· 33%	63%	Showers	W 7 mph12 km/h
DayMostly cloudy and hot, with a high of 89°F32°C and morning low of 77°F25°C — feels like 100°F38°C. Breezy from the W at 8 to 9 mph14 to 15 km/h. 23% chance of drizzle throughout the day. Heat risk in the afternoon. NightMostly cloudy, with a low around 77°F25°C. Light wind from the WSW around 6 mph10 km/h. 33% chance of showers throughout the night.
	MondayAug 17	81°F27°C Feels 84°F29°C	71°F22°C	0.18 in4.5 mm· 36%	60%	Showers	NNW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 72°F22°C. Breezy from the NNW at 8 to 9 mph12 to 14 km/h. 32% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Light wind from the NNW around 6 mph9 km/h. 36% chance of showers overnight.
	TuesdayAug 18	83°F28°C	64°F18°C	0 in0 mm· —	32%	Clear	N 4 mph6 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 64°F18°C. Light wind from the NNW around 3 mph6 km/h. NightPartly cloudy, with a low around 64°F18°C. Light wind from the NNE around 4 mph6 km/h.
	WednesdayAug 19	86°F30°C Feels 91°F33°C	68°F20°C	0.09 in2.3 mm· 20%	67%	Showers	SSW 7 mph12 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 69°F20°C. Breezy from the SSW at 8 to 9 mph13 to 15 km/h. 19% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 68°F20°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 20% chance of showers throughout the night.
	ThursdayAug 20	82°F28°C	70°F21°C	0.08 in2 mm· 23%	50%	Showers	NW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 70°F21°C. Breezy from the NW at 8 mph12 km/h. 15% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 71°F22°C. Breezy from the NNW at 6 to 7 mph10 to 11 km/h. 23% chance of showers overnight.
	FridayAug 21	80°F27°C	64°F18°C	0.08 in2.1 mm· 16%	45%	Drizzle	NNE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 64°F18°C. Light wind from the NNE around 6 mph10 km/h. 10% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F18°C. Light wind from the NNE around 5 mph9 km/h. 16% chance of drizzle throughout the night.
	SaturdayAug 22	80°F27°C	64°F18°C	0.06 in1.6 mm· 12%	41%	Drizzle	NE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 64°F18°C. Breezy from the NNE at 6 to 7 mph10 to 11 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the NE around 5 mph9 km/h.
	SundayAug 23	82°F28°C	63°F17°C	0.02 in0.6 mm· 6%	31%	Clear	NE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 63°F17°C. Breezy from the NNE at 6 to 7 mph10 to 11 km/h. NightPartly cloudy, with a low around 64°F18°C. Light wind from the NE around 5 mph8 km/h.
	MondayAug 24	84°F29°C	65°F18°C	0.03 in0.7 mm· 7%	35%	Clear	E 6 mph9 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 65°F18°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. NightPartly cloudy, with a low around 65°F18°C. Light wind from the ENE around 5 mph9 km/h.
	TuesdayAug 25	84°F29°C	66°F19°C	0.03 in0.8 mm· 9%	35%	Clear	ESE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 66°F19°C. Light wind from the SSW around 6 mph10 km/h. NightPartly cloudy, with a low around 66°F19°C. Light wind from the E around 5 mph9 km/h.
	WednesdayAug 26	85°F29°C	66°F19°C	0.03 in0.7 mm· 10%	36%	Drizzle	N 6 mph9 km/h
DayPartly cloudy and warm, with a high of 85°F29°C and morning low of 66°F19°C. Breezy from the NW at 6 to 7 mph10 to 11 km/h. 10% chance of drizzle. NightPartly cloudy, with a low around 67°F19°C. Light wind from the NE around 6 mph9 km/h.
	ThursdayAug 27	84°F29°C	66°F19°C	0.04 in1.1 mm· 19%	39%	Drizzle	NNE 6 mph10 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 66°F19°C. Breezy from the N at 6 to 7 mph10 to 12 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F19°C. Light wind from the NE around 6 mph9 km/h.

Nearby Cities

Carmel8 mi13 km Broad Ripple9 mi14 km Westfield10 mi15 km Brownsburg10 mi17 km Fairfield Heights11 mi17 km Lebanon13 mi21 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 39.9509°N, 86.2619°W·Elevation: 257m·Timezone: America/Indiana/Indianapolis·Population: 26,296