Current Conditions

Guidonia Montecelio, Lazio

89°F32°C

Clear

Wind

W 9 mph14 km/h

Humidity

36%

Cloud Cover

11%

As of Wednesday, September 2, 2026 at 4:47 PM GMT+2

Today's Outlook

Day

Mostly clear and hot, with a high of 91°F33°C. Breezy from the W at 8 to 9 mph12 to 14 km/h.

Night

Mostly clear, with a low around 76°F24°C. Light wind from the W around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Clear	High 91°F33°C	Low 76°F24°C	Precip 0 in0 mm—	Cloud 9%	Wind W 5 mph8 km/h	Wednesday: Mostly clear and hot, with a high of 91°F33°C. Breezy from the W at 8 to 9 mph12 to 14 km/h. Wednesday Night: Mostly clear, with a low around 76°F24°C. Light wind from the W around 3 mph5 km/h.
Clear	High 91°F33°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 5%	Wind NW 4 mph7 km/h	Thursday: Mostly clear and hot, with a high of 91°F33°C and morning low of 69°F20°C. Breezy from the WNW at 5 to 8 mph8 to 14 km/h. Thursday Night: Mostly clear, with a low around 66°F19°C. Light wind from the N around 3 mph5 km/h.
Clear	High 92°F33°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 16%	Wind SSW 4 mph6 km/h	Friday: Mostly clear and hot, with a high of 92°F33°C and morning low of 68°F20°C. Breezy from the SW at 5 to 8 mph8 to 13 km/h. Friday Night: Mostly clear, with a low around 66°F19°C. Light wind from the ENE around 3 mph5 km/h.
Clear	High 91°F33°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 0%	Wind WSW 4 mph6 km/h	Saturday: Mostly clear and hot, with a high of 91°F33°C and morning low of 69°F21°C. Breezy from the WSW at 5 to 7 mph8 to 12 km/h. Saturday Night: Mostly clear, with a low around 67°F19°C. Light wind from the E around 2 mph4 km/h.
Clear	High 90°F32°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 3%	Wind WSW 3 mph5 km/h	Sunday: Mostly clear and hot, with a high of 90°F32°C and morning low of 68°F20°C. Breezy from the WSW at 4 to 7 mph7 to 11 km/h. Sunday Night: Mostly clear, with a low around 67°F19°C. Light wind from the ENE around 2 mph3 km/h.
Clear	High 90°F32°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 9%	Wind WSW 3 mph5 km/h	Monday: Mostly clear and hot, with a high of 90°F32°C and morning low of 69°F21°C. Breezy from the WSW at 4 to 7 mph7 to 11 km/h. Humid. Monday Night: Mostly clear, with a low around 68°F20°C. Light wind from the ENE around 2 mph3 km/h.
Drizzle	High 89°F31°C	Low 68°F20°C	Precip 0.01 in0.2 mm13%	Cloud 18%	Wind SW 3 mph5 km/h	Tuesday: Mostly clear and hot, with a high of 89°F31°C and morning low of 69°F21°C. Light wind from the WSW around 4 mph7 km/h. 13% chance of drizzle in the afternoon. Humid. Tuesday Night: Mostly clear, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	91°F33°C	76°F24°C	0 in0 mm· —	9%	Clear	W 5 mph8 km/h
DayMostly clear and hot, with a high of 91°F33°C. Breezy from the W at 8 to 9 mph12 to 14 km/h. NightMostly clear, with a low around 76°F24°C. Light wind from the W around 3 mph5 km/h.
	ThursdaySep 3	91°F33°C	66°F19°C	0 in0 mm· —	5%	Clear	NW 4 mph7 km/h
DayMostly clear and hot, with a high of 91°F33°C and morning low of 69°F20°C. Breezy from the WNW at 5 to 8 mph8 to 14 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the N around 3 mph5 km/h.
	FridaySep 4	92°F33°C	66°F19°C	0 in0 mm· —	16%	Clear	SSW 4 mph6 km/h
DayMostly clear and hot, with a high of 92°F33°C and morning low of 68°F20°C. Breezy from the SW at 5 to 8 mph8 to 13 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the ENE around 3 mph5 km/h.
	SaturdaySep 5	91°F33°C	67°F19°C	0 in0 mm· —	0%	Clear	WSW 4 mph6 km/h
DayMostly clear and hot, with a high of 91°F33°C and morning low of 69°F21°C. Breezy from the WSW at 5 to 7 mph8 to 12 km/h. NightMostly clear, with a low around 67°F19°C. Light wind from the E around 2 mph4 km/h.
	SundaySep 6	90°F32°C	67°F19°C	0 in0 mm· —	3%	Clear	WSW 3 mph5 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 68°F20°C. Breezy from the WSW at 4 to 7 mph7 to 11 km/h. NightMostly clear, with a low around 67°F19°C. Light wind from the ENE around 2 mph3 km/h.
	MondaySep 7	90°F32°C	68°F20°C	0 in0 mm· —	9%	Clear	WSW 3 mph5 km/h
DayMostly clear and hot, with a high of 90°F32°C and morning low of 69°F21°C. Breezy from the WSW at 4 to 7 mph7 to 11 km/h. Humid. NightMostly clear, with a low around 68°F20°C. Light wind from the ENE around 2 mph3 km/h.
	TuesdaySep 8	89°F31°C	68°F20°C	0.01 in0.2 mm· 13%	18%	Drizzle	SW 3 mph5 km/h
DayMostly clear and hot, with a high of 89°F31°C and morning low of 69°F21°C. Light wind from the WSW around 4 mph7 km/h. 13% chance of drizzle in the afternoon. Humid. NightMostly clear, with a low around 68°F20°C. Light wind from the SE around 2 mph3 km/h.
	WednesdaySep 9	85°F29°C	68°F20°C	0.23 in5.8 mm· 42%	45%	Showers	S 5 mph8 km/h
DayPartly cloudy and warm, with a high of 85°F29°C and morning low of 70°F21°C. Breezy from the SSW at 6 to 8 mph10 to 12 km/h. 42% chance of showers throughout the day. Humid. NightPartly cloudy, with a low around 68°F20°C. Light wind from the SE around 3 mph5 km/h. 35% chance of showers in the evening.
	ThursdaySep 10	80°F27°C	69°F20°C	0.31 in7.8 mm· 46%	62%	Showers	SSE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 69°F20°C. Breezy from the S at 6 to 8 mph10 to 12 km/h. 46% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Light wind from the SE around 4 mph6 km/h. 31% chance of showers throughout the night.
	FridaySep 11	80°F27°C	65°F18°C	0.16 in4.1 mm· 37%	41%	Showers	ENE 5 mph7 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 66°F19°C. Light wind from the WSW around 5 mph9 km/h. 37% chance of showers throughout the day. NightPartly cloudy, with a low around 65°F18°C. Light wind from the ENE around 4 mph6 km/h. 22% chance of showers throughout the night.
	SaturdaySep 12	80°F27°C	63°F17°C	0.08 in2.1 mm· 26%	34%	Showers	NE 5 mph7 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 63°F17°C. Light wind from the W around 5 mph9 km/h. 26% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Light wind from the NE around 4 mph6 km/h. 16% chance of drizzle throughout the night.
	SundaySep 13	80°F27°C	62°F17°C	0.11 in2.8 mm· 29%	38%	Showers	ENE 5 mph7 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 63°F17°C. Light wind from the WSW around 5 mph9 km/h. 29% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the ENE around 4 mph6 km/h. 23% chance of showers throughout the night.
	MondaySep 14	79°F26°C	62°F17°C	0.13 in3.2 mm· 31%	40%	Showers	ENE 4 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 63°F17°C. Light wind from the SW around 5 mph8 km/h. 31% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F17°C. Light wind from the ENE around 4 mph6 km/h. 19% chance of drizzle throughout the night.
	TuesdaySep 15	79°F26°C	62°F16°C	0.11 in2.9 mm· 24%	43%	Showers	NE 4 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 62°F17°C. Light wind from the NW around 5 mph8 km/h. 24% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F16°C. Light wind from the ENE around 4 mph6 km/h. 23% chance of drizzle throughout the night.
	WednesdaySep 16	79°F26°C	62°F16°C	0.12 in3.1 mm· 33%	44%	Showers	E 4 mph7 km/h
DayPartly cloudy and warm, with a high of 79°F26°C and morning low of 62°F17°C. Breezy from the SSW at 5 to 7 mph9 to 11 km/h. 33% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F16°C. Light wind from the ENE around 4 mph6 km/h. 22% chance of showers throughout the night.

Nearby Cities

Guidonia0 mi0 km Villanova3 mi4 km Tivoli5 mi8 km Mentana5 mi8 km Tor Lupara5 mi9 km Monterotondo7 mi11 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: 41.9936°N, 12.7224°E·Elevation: 92m·Timezone: Europe/Rome·Population: 89,165