Current Conditions

Castelo do Piauí, Piauí

99°F37°C

Hot

Wind

ESE 10 mph16 km/h

Humidity

24%

Cloud Cover

21%

As of Tuesday, September 8, 2026 at 2:24 PM GMT-3

Today's Outlook

Day

Mostly clear and hot, with a high of 99°F37°C and morning low of 87°F30°C. Breezy from the ESE at 12 to 13 mph19 to 22 km/h. Heat risk in the afternoon.

Night

Mostly clear, with a low around 88°F31°C. Breezy from the E at 8 mph12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 99°F37°C	Low 87°F30°C	Precip 0 in0 mm—	Cloud 18%	Wind ESE 10 mph16 km/h	Tuesday: Mostly clear and hot, with a high of 99°F37°C and morning low of 87°F30°C. Breezy from the ESE at 12 to 13 mph19 to 22 km/h. Heat risk in the afternoon. Tuesday Night: Mostly clear, with a low around 88°F31°C. Breezy from the E at 8 mph12 km/h.
Hot	High 99°F37°C	Low 76°F25°C	Precip 0 in0 mm—	Cloud 9%	Wind E 9 mph14 km/h	Wednesday: Mostly clear and hot, with a high of 99°F37°C and morning low of 76°F25°C. Breezy from the ESE at 10 to 13 mph16 to 21 km/h. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 79°F26°C. Breezy from the E at 8 to 10 mph12 to 15 km/h.
Hot	High 98°F37°C	Low 76°F24°C	Precip 0 in0 mm—	Cloud 12%	Wind E 11 mph17 km/h	Thursday: Mostly clear and hot, with a high of 98°F37°C and morning low of 76°F24°C. Breezy from the E at 12 to 15 mph20 to 24 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 78°F26°C. Breezy from the E at 9 to 12 mph14 to 19 km/h.
Hot	High 99°F37°C	Low 75°F24°C	Precip 0 in0 mm—	Cloud 5%	Wind E 10 mph17 km/h	Friday: Mostly clear and hot, with a high of 99°F37°C and morning low of 75°F24°C. Breezy from the E at 12 to 15 mph19 to 24 km/h. Heat risk in the afternoon. Friday Night: Mostly clear, with a low around 78°F26°C. Breezy from the E at 9 to 12 mph14 to 20 km/h.
Hot	High 99°F37°C	Low 75°F24°C	Precip 0 in0 mm—	Cloud 5%	Wind E 11 mph17 km/h	Saturday: Mostly clear and hot, with a high of 99°F37°C and morning low of 75°F24°C. Breezy from the E at 12 to 15 mph20 to 24 km/h. Heat risk in the afternoon. Saturday Night: Mostly clear, with a low around 78°F26°C. Breezy from the E at 9 to 13 mph15 to 21 km/h.
Hot	High 100°F38°C	Low 76°F24°C	Precip 0 in0 mm—	Cloud 7%	Wind E 10 mph16 km/h	Sunday: Mostly clear and hot, with a high of 100°F38°C and morning low of 76°F24°C. Breezy from the E at 12 to 15 mph19 to 24 km/h. Heat risk in the afternoon. Sunday Night: Mostly clear, with a low around 79°F26°C. Breezy from the ENE at 8 to 10 mph13 to 16 km/h.
Hot	High 100°F38°C	Low 75°F24°C	Precip 0 in0 mm—	Cloud 16%	Wind E 9 mph14 km/h	Monday: Mostly clear and hot, with a high of 100°F38°C and morning low of 75°F24°C. Breezy from the E at 11 to 14 mph17 to 22 km/h. Heat risk in the afternoon. Monday Night: Mostly clear, with a low around 79°F26°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	99°F37°C	87°F30°C	0 in0 mm· —	18%	Hot	ESE 10 mph16 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 87°F30°C. Breezy from the ESE at 12 to 13 mph19 to 22 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 88°F31°C. Breezy from the E at 8 mph12 km/h.
	WednesdaySep 9	99°F37°C	76°F25°C	0 in0 mm· —	9%	Hot	E 9 mph14 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 76°F25°C. Breezy from the ESE 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 E at 8 to 10 mph12 to 15 km/h.
	ThursdaySep 10	98°F37°C	76°F24°C	0 in0 mm· —	12%	Hot	E 11 mph17 km/h
DayMostly clear and hot, with a high of 98°F37°C and morning low of 76°F24°C. Breezy from the E at 12 to 15 mph20 to 24 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the E at 9 to 12 mph14 to 19 km/h.
	FridaySep 11	99°F37°C	75°F24°C	0 in0 mm· —	5%	Hot	E 10 mph17 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 75°F24°C. Breezy from the E at 12 to 15 mph19 to 24 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the E at 9 to 12 mph14 to 20 km/h.
	SaturdaySep 12	99°F37°C	75°F24°C	0 in0 mm· —	5%	Hot	E 11 mph17 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 75°F24°C. Breezy from the E at 12 to 15 mph20 to 24 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the E at 9 to 13 mph15 to 21 km/h.
	SundaySep 13	100°F38°C	76°F24°C	0 in0 mm· —	7%	Hot	E 10 mph16 km/h
DayMostly clear and hot, with a high of 100°F38°C and morning low of 76°F24°C. Breezy from the E at 12 to 15 mph19 to 24 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the ENE at 8 to 10 mph13 to 16 km/h.
	MondaySep 14	100°F38°C	75°F24°C	0 in0 mm· —	16%	Hot	E 9 mph14 km/h
DayMostly clear and hot, with a high of 100°F38°C and morning low of 75°F24°C. Breezy from the E at 11 to 14 mph17 to 22 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h.
	TuesdaySep 15	100°F38°C	76°F24°C	0 in0 mm· —	24%	Hot	E 7 mph12 km/h
DayPartly cloudy and hot, with a high of 100°F38°C and morning low of 76°F24°C. Breezy from the ESE at 9 to 12 mph14 to 19 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
	WednesdaySep 16	101°F38°C	76°F24°C	0 in0 mm· —	17%	Hot	E 8 mph13 km/h
DayMostly clear and hot, with a high of 101°F38°C and morning low of 76°F24°C. Breezy from the E at 10 to 13 mph16 to 20 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h.
	ThursdaySep 17	99°F37°C	76°F24°C	0 in0 mm· —	10%	Hot	E 10 mph16 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 76°F24°C. Breezy from the ESE at 12 to 14 mph19 to 23 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the E at 8 to 10 mph13 to 16 km/h.
	FridaySep 18	98°F37°C	77°F25°C	0 in0 mm· —	13%	Hot	E 10 mph16 km/h
DayMostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Breezy from the ESE at 12 to 14 mph19 to 23 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the E at 8 to 11 mph13 to 17 km/h.
	SaturdaySep 19	98°F37°C	76°F24°C	0 in0 mm· —	13%	Hot	E 10 mph16 km/h
DayMostly clear and hot, with a high of 98°F37°C and morning low of 76°F24°C. Breezy from the ESE at 12 to 14 mph19 to 23 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the E at 8 to 10 mph13 to 17 km/h.
	SundaySep 20	99°F37°C	76°F24°C	0 in0 mm· —	14%	Hot	E 9 mph14 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 76°F24°C. Breezy from the ESE at 10 to 13 mph17 to 22 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F26°C. Breezy from the E at 7 to 9 mph11 to 15 km/h.
	MondaySep 21	100°F38°C	76°F25°C	0 in0 mm· —	21%	Hot	E 8 mph12 km/h
DayMostly clear and hot, with a high of 100°F38°C and morning low of 76°F25°C. Breezy from the ESE at 9 to 12 mph15 to 20 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the E at 6 to 7 mph9 to 11 km/h.
	TuesdaySep 22	100°F38°C	77°F25°C	0 in0 mm· —	28%	Hot	E 7 mph11 km/h
DayMostly clear and hot, with a high of 100°F38°C and morning low of 77°F25°C. Breezy from the E at 9 to 12 mph14 to 19 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 80°F27°C. Light wind from the ENE around 5 mph9 km/h.

Nearby Cities

São Miguel do Tapuio20 mi32 km Campo Maior54 mi88 km Novo Oriente56 mi89 km Crateús62 mi99 km Pedro II62 mi100 km Altos65 mi105 km

About This Forecast

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Coordinates: 5.3222°S, 41.5525°W·Elevation: 241m·Timezone: America/Fortaleza·Population: 19,715