Current Conditions

Johnston, Iowa

84°F29°C

Hot

Wind

S 8 mph12 km/h

Humidity

57%

Cloud Cover

31%

As of Wednesday, September 2, 2026 at 8:46 AM CDT

Today's Outlook

Day

Partly cloudy and hot, with a high of 96°F35°C and morning low of 73°F23°C. Breezy from the SSW at 8 to 11 mph13 to 18 km/h. Heat risk in the afternoon.

Night

Partly cloudy, with a low around 83°F28°C. Breezy from the S at 7 to 9 mph12 to 14 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 96°F35°CFeels 101°F38°C	Low 73°F23°C	Precip 0 in0.1 mm4%	Cloud 27%	Wind SSW 8 mph13 km/h	Wednesday: Partly cloudy and hot, with a high of 96°F35°C and morning low of 73°F23°C. Breezy from the SSW at 8 to 11 mph13 to 18 km/h. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 83°F28°C. Breezy from the S at 7 to 9 mph12 to 14 km/h.
Hot	High 95°F35°CFeels 100°F38°C	Low 76°F24°C	Precip 0 in0.1 mm4%	Cloud 27%	Wind S 9 mph15 km/h	Thursday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 100°F38°C. Breezy from the S at 10 to 13 mph16 to 21 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 79°F26°C. Breezy from the S at 9 to 10 mph14 to 16 km/h.
Hot	High 95°F35°CFeels 102°F39°C	Low 76°F24°C	Precip 0 in0.1 mm6%	Cloud 31%	Wind S 8 mph13 km/h	Friday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 102°F39°C. Breezy from the S at 9 to 10 mph14 to 17 km/h. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the S at 7 to 9 mph11 to 14 km/h.
Drizzle	High 95°F35°CFeels 102°F39°C	Low 74°F23°C	Precip 0.04 in0.9 mm13%	Cloud 44%	Wind SE 6 mph9 km/h	Saturday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 74°F23°C — feels like 102°F39°C. Light wind from the SE around 5 mph9 km/h. 13% chance of drizzle around midday. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 76°F25°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h.
Showers	High 88°F31°CFeels 95°F35°C	Low 73°F23°C	Precip 0.09 in2.3 mm28%	Cloud 69%	Wind ESE 7 mph12 km/h	Sunday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C — feels like 95°F35°C. Breezy from the SE at 7 to 8 mph11 to 12 km/h. 27% chance of drizzle throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 75°F24°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h. 28% chance of showers throughout the night.
Showers	High 88°F31°CFeels 92°F34°C	Low 72°F22°C	Precip 0.08 in2 mm22%	Cloud 68%	Wind SE 10 mph16 km/h	Monday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 72°F22°C — feels like 93°F34°C. Breezy from the SE at 10 to 11 mph16 to 18 km/h. 18% chance of drizzle throughout the day. Humid. Monday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the SE at 10 to 12 mph15 to 19 km/h. 22% chance of showers throughout the night.
Hot	High 95°F35°CFeels 102°F39°C	Low 74°F23°C	Precip 0.05 in1.2 mm9%	Cloud 48%	Wind S 11 mph18 km/h	Tuesday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 74°F23°C — feels like 102°F39°C. Breezy from the S at 11 to 13 mph18 to 21 km/h. Heat risk in the afternoon. Tuesday Night: Mostly cloudy, with a low around 76°F24°C. Breezy from the SSE at 11 to 12 mph17 to 19 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	96°F35°C Feels 101°F38°C	73°F23°C	0 in0.1 mm· 4%	27%	Hot	SSW 8 mph13 km/h
DayPartly cloudy and hot, with a high of 96°F35°C and morning low of 73°F23°C. Breezy from the SSW at 8 to 11 mph13 to 18 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 83°F28°C. Breezy from the S at 7 to 9 mph12 to 14 km/h.
	ThursdaySep 3	95°F35°C Feels 100°F38°C	76°F24°C	0 in0.1 mm· 4%	27%	Hot	S 9 mph15 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 100°F38°C. Breezy from the S at 10 to 13 mph16 to 21 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the S at 9 to 10 mph14 to 16 km/h.
	FridaySep 4	95°F35°C Feels 102°F39°C	76°F24°C	0 in0.1 mm· 6%	31%	Hot	S 8 mph13 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 76°F24°C — feels like 102°F39°C. Breezy from the S at 9 to 10 mph14 to 17 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the S at 7 to 9 mph11 to 14 km/h.
	SaturdaySep 5	95°F35°C Feels 102°F39°C	74°F23°C	0.04 in0.9 mm· 13%	44%	Drizzle	SE 6 mph9 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 74°F23°C — feels like 102°F39°C. Light wind from the SE around 5 mph9 km/h. 13% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 76°F25°C. Breezy from the SE at 6 to 7 mph10 to 12 km/h.
	SundaySep 6	88°F31°C Feels 95°F35°C	73°F23°C	0.09 in2.3 mm· 28%	69%	Showers	ESE 7 mph12 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C — feels like 95°F35°C. Breezy from the SE at 7 to 8 mph11 to 12 km/h. 27% chance of drizzle throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 75°F24°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h. 28% chance of showers throughout the night.
	MondaySep 7	88°F31°C Feels 92°F34°C	72°F22°C	0.08 in2 mm· 22%	68%	Showers	SE 10 mph16 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 72°F22°C — feels like 93°F34°C. Breezy from the SE at 10 to 11 mph16 to 18 km/h. 18% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SE at 10 to 12 mph15 to 19 km/h. 22% chance of showers throughout the night.
	TuesdaySep 8	95°F35°C Feels 102°F39°C	74°F23°C	0.05 in1.2 mm· 9%	48%	Hot	S 11 mph18 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 74°F23°C — feels like 102°F39°C. Breezy from the S at 11 to 13 mph18 to 21 km/h. Heat risk in the afternoon. NightMostly cloudy, with a low around 76°F24°C. Breezy from the SSE at 11 to 12 mph17 to 19 km/h.
	WednesdaySep 9	91°F33°C Feels 96°F36°C	76°F24°C	0.09 in2.4 mm· 22%	43%	Showers	SSW 9 mph15 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 76°F24°C — feels like 97°F36°C. Breezy from the SSW at 9 to 10 mph15 to 17 km/h. 13% chance of drizzle throughout the day. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the SSW at 9 to 10 mph15 to 17 km/h. 22% chance of showers throughout the night.
	ThursdaySep 10	86°F30°C Feels 89°F32°C	72°F22°C	0.21 in5.3 mm· 29%	57%	Showers	S 8 mph14 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 72°F22°C. Breezy from the SSW at 9 mph14 km/h. 24% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 74°F23°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 29% chance of showers throughout the night.
	FridaySep 11	83°F29°C	69°F21°C	0.27 in6.8 mm· 25%	57%	Showers	S 9 mph15 km/h
DayMostly cloudy and warm, with a high of 83°F29°C and morning low of 69°F21°C. Breezy from the SSW at 10 to 11 mph16 to 18 km/h. 24% chance of showers throughout the day. NightMostly cloudy, with a low around 71°F22°C. Breezy from the SSE at 9 mph14 km/h. 25% chance of showers throughout the night.
	SaturdaySep 12	80°F27°C	65°F18°C	0.19 in4.9 mm· 25%	54%	Showers	WSW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 65°F18°C. Breezy from the WSW at 10 to 11 mph16 to 17 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F19°C. Breezy from the SSW at 9 mph14 km/h. 25% chance of showers throughout the night.
	SundaySep 13	78°F26°C	62°F17°C	0.16 in4.1 mm· 17%	54%	Showers	SSW 9 mph14 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 62°F17°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 16% chance of showers throughout the day. NightMostly cloudy, with a low around 64°F18°C. Breezy from the SSE at 8 mph13 km/h. 17% chance of showers throughout the night.
	MondaySep 14	78°F25°C	61°F16°C	0.16 in4.1 mm· 17%	50%	Showers	SSE 9 mph14 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 61°F16°C. Breezy from the SSE at 9 to 10 mph15 to 16 km/h. 16% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the SE at 8 mph13 km/h. 17% chance of showers throughout the night.
	TuesdaySep 15	78°F25°C	60°F16°C	0.12 in3 mm· 15%	40%	Showers	SSE 9 mph14 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 60°F16°C. Breezy from the S at 10 to 11 mph15 to 17 km/h. 15% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F17°C. Breezy from the SE at 8 mph13 km/h. 14% chance of drizzle throughout the night.
	WednesdaySep 16	78°F25°C	59°F15°C	0.13 in3.2 mm· 16%	39%	Showers	SSE 9 mph14 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 59°F15°C. Breezy from the SSE at 10 to 11 mph15 to 17 km/h. 15% chance of showers throughout the day. NightPartly cloudy, with a low around 61°F16°C. Breezy from the SE at 8 to 9 mph13 to 14 km/h. 16% chance of showers throughout the night.

Nearby Cities

Urbandale3 mi5 km Clive5 mi8 km Ankeny6 mi10 km West Des Moines7 mi11 km Des Moines7 mi11 km Waukee11 mi17 km

About This Forecast

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Coordinates: 41.6730°N, 93.6977°W·Elevation: 253m·Timezone: America/Chicago·Population: 20,871