Current Conditions

Guyancourt, Île-de-France

67°F19°C

Drizzle

Wind

NW 6 mph9 km/h

Humidity

74%

Cloud Cover

80%

As of Sunday, September 20, 2026 at 8:08 PM GMT+2

Today's Outlook

Night

Mostly cloudy, with a low around 60°F16°C. Light wind from the NNW around 6 mph9 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 72°F22°C	Low 60°F16°C	Precip 0.01 in0.2 mm14%	Cloud 84%	Wind NW 8 mph12 km/h	Sunday: Overcast and warm, with a high of 72°F22°C. Breezy from the WNW at 9 to 10 mph15 to 16 km/h. 14% chance of drizzle in the afternoon. Sunday Night: Mostly cloudy, with a low around 60°F16°C. Light wind from the NNW around 6 mph9 km/h.
Partly Cloudy	High 73°F23°C	Low 50°F10°C	Precip 0 in0 mm—	Cloud 57%	Wind NNE 5 mph7 km/h	Monday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 50°F10°C. Breezy from the NNE at 5 to 7 mph8 to 11 km/h. Dry air. Monday Night: Partly cloudy, with a low around 51°F11°C. Light wind from the NNE around 4 mph7 km/h.
Clear	High 76°F24°C	Low 48°F9°CFeels 45°F7°C	Precip 0 in0 mm—	Cloud 1%	Wind NE 6 mph9 km/h	Tuesday: Mostly clear and warm, with a high of 76°F24°C and morning low of 48°F9°C. Breezy from the NE at 6 to 8 mph10 to 13 km/h. Dry air. Tuesday Night: Mostly clear, with a low around 49°F9°C. Light wind from the NE around 5 mph9 km/h.
Clear	High 77°F25°C	Low 50°F10°C	Precip 0 in0 mm—	Cloud 33%	Wind NE 4 mph7 km/h	Wednesday: Partly cloudy and warm, with a high of 77°F25°C and morning low of 50°F10°C. Light wind from the NE around 4 mph6 km/h. Dry air. Wednesday Night: Mostly clear, with a low around 52°F11°C. Light wind from the NE around 5 mph8 km/h.
Partly Cloudy	High 77°F25°C	Low 52°F11°C	Precip 0 in0 mm—	Cloud 58%	Wind ENE 5 mph9 km/h	Thursday: Mostly cloudy and warm, with a high of 77°F25°C and morning low of 52°F11°C. Light wind from the E around 5 mph9 km/h. Thursday Night: Mostly cloudy, with a low around 53°F12°C. Light wind from the ENE around 5 mph9 km/h.
Clear	High 81°F27°C	Low 50°F10°C	Precip 0 in0 mm—	Cloud 15%	Wind SE 5 mph9 km/h	Friday: Mostly clear and warm, with a high of 81°F27°C and morning low of 50°F10°C. Light wind from the SE around 5 mph8 km/h. Dry air. Friday Night: Mostly clear, with a low around 52°F11°C. Light wind from the ESE around 6 mph9 km/h.
Partly Cloudy	High 76°F24°C	Low 52°F11°C	Precip 0.01 in0.2 mm7%	Cloud 49%	Wind WSW 5 mph9 km/h	Saturday: Mostly cloudy and warm, with a high of 76°F24°C and morning low of 52°F11°C. Light wind from the WSW around 5 mph9 km/h. Saturday Night: Partly cloudy, with a low around 53°F12°C. Light wind from the NNW around 5 mph8 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	SundaySep 20	72°F22°C	60°F16°C	0.01 in0.2 mm· 14%	84%	Drizzle	NW 8 mph12 km/h
DayOvercast and warm, with a high of 72°F22°C. Breezy from the WNW at 9 to 10 mph15 to 16 km/h. 14% chance of drizzle in the afternoon. NightMostly cloudy, with a low around 60°F16°C. Light wind from the NNW around 6 mph9 km/h.
	MondaySep 21	73°F23°C	50°F10°C	0 in0 mm· —	57%	Partly Cloudy	NNE 5 mph7 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 50°F10°C. Breezy from the NNE at 5 to 7 mph8 to 11 km/h. Dry air. NightPartly cloudy, with a low around 51°F11°C. Light wind from the NNE around 4 mph7 km/h.
	TuesdaySep 22	76°F24°C	48°F9°C Feels 45°F7°C	0 in0 mm· —	1%	Clear	NE 6 mph9 km/h
DayMostly clear and warm, with a high of 76°F24°C and morning low of 48°F9°C. Breezy from the NE at 6 to 8 mph10 to 13 km/h. Dry air. NightMostly clear, with a low around 49°F9°C. Light wind from the NE around 5 mph9 km/h.
	WednesdaySep 23	77°F25°C	50°F10°C	0 in0 mm· —	33%	Clear	NE 4 mph7 km/h
DayPartly cloudy and warm, with a high of 77°F25°C and morning low of 50°F10°C. Light wind from the NE around 4 mph6 km/h. Dry air. NightMostly clear, with a low around 52°F11°C. Light wind from the NE around 5 mph8 km/h.
	ThursdaySep 24	77°F25°C	52°F11°C	0 in0 mm· —	58%	Partly Cloudy	ENE 5 mph9 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 52°F11°C. Light wind from the E around 5 mph9 km/h. NightMostly cloudy, with a low around 53°F12°C. Light wind from the ENE around 5 mph9 km/h.
	FridaySep 25	81°F27°C	50°F10°C	0 in0 mm· —	15%	Clear	SE 5 mph9 km/h
DayMostly clear and warm, with a high of 81°F27°C and morning low of 50°F10°C. Light wind from the SE around 5 mph8 km/h. Dry air. NightMostly clear, with a low around 52°F11°C. Light wind from the ESE around 6 mph9 km/h.
	SaturdaySep 26	76°F24°C	52°F11°C	0.01 in0.2 mm· 7%	49%	Partly Cloudy	WSW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 52°F11°C. Light wind from the WSW around 5 mph9 km/h. NightPartly cloudy, with a low around 53°F12°C. Light wind from the NNW around 5 mph8 km/h.
	SundaySep 27	78°F26°C	54°F12°C	0.03 in0.7 mm· 9%	66%	Partly Cloudy	S 6 mph9 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 54°F12°C. Breezy from the S at 6 to 7 mph10 to 12 km/h. NightMostly cloudy, with a low around 55°F13°C. Light wind from the SSE around 5 mph8 km/h.
	MondaySep 28	75°F24°C	58°F15°C	0.1 in2.6 mm· 24%	72%	Drizzle	S 7 mph11 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 58°F15°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 24% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 16% chance of drizzle throughout the night.
	TuesdaySep 29	78°F26°C	57°F14°C	0.04 in1.1 mm· 14%	64%	Drizzle	SSE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 57°F14°C. Breezy from the SSE at 8 to 9 mph13 to 14 km/h. NightMostly cloudy, with a low around 58°F15°C. Breezy from the SSE at 7 mph11 km/h. 14% chance of drizzle throughout the night.
	WednesdaySep 30	78°F26°C	60°F16°C	0.07 in1.8 mm· 17%	60%	Drizzle	S 8 mph12 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 60°F16°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the S at 7 mph11 km/h. 17% chance of drizzle throughout the night.
	ThursdayOct 1	74°F23°C	58°F15°C	0.1 in2.5 mm· 19%	60%	Drizzle	SSW 7 mph11 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 58°F15°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 60°F15°C. Light wind from the SSW around 6 mph10 km/h. 16% chance of drizzle throughout the night.
	FridayOct 2	72°F22°C	55°F13°C	0.06 in1.6 mm· 14%	61%	Drizzle	SSW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 55°F13°C. Breezy from the SSW at 7 mph11 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 56°F13°C. Light wind from the SSW around 6 mph9 km/h. 12% chance of drizzle throughout the night.
	SaturdayOct 3	70°F21°C	54°F12°C	0.06 in1.5 mm· 14%	60%	Drizzle	W 6 mph10 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 54°F12°C. Breezy from the SW at 7 to 8 mph11 to 13 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 55°F13°C. Light wind from the NNE around 6 mph10 km/h. 12% chance of drizzle throughout the night.
	SundayOct 4	69°F20°C	53°F11°C	0.07 in1.8 mm· 16%	60%	Drizzle	NNE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 53°F11°C. Breezy from the NNE at 7 to 8 mph11 to 12 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 54°F12°C. Light wind from the NNE around 6 mph10 km/h. 16% chance of drizzle throughout the night.

Nearby Cities

Saint-Cyr-l'École2 mi3 km Montigny-le-Bretonneux2 mi3 km Saint-Quentin-en-Yvelines3 mi4 km Trappes3 mi4 km Versailles3 mi6 km Le Chesnay4 mi6 km

About This Forecast

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Coordinates: 48.7733°N, 2.0739°E·Elevation: 161m·Timezone: Europe/Paris·Population: 31,989