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      Elev 505 ft, 48.767 °N 2.065 °E

      Guyancourt, FR

      Sun, Oct 18, 2026
      Tonight
      Sat 10/17
      Low 40°f
      5% Precip. / 0 in
      Clear skies. Low near 40F. Winds N at 5 to 10 mph.
      Tomorrow
      Sun 10/18
      High 58°f
      24% Precip. / 0 in
      Sunshine and clouds mixed. Slight chance of a rain shower. High 58F. Winds NNE at 5 to 10 mph.
      Sunrise 8:16 AM
      Sunset 6:56 PM
      Moonrise 3:53 PM
      Moonset -
      First Quarter, 49% visible
      Hourly Forecast
      Now
      47°
      12AM
      47°
      1AM
      46°
      2AM
      45°
      3AM
      45°
      4AM
      45°
      5AM
      43°
      6AM
      43°
      7AM
      42°
      8AM
      41°
      8:16AM
      Sunrise
      9AM
      43°
      10AM
      46°
      11AM
      49°
      12PM
      52°
      1PM
      54°
      2PM
      55°
      3PM
      56°
      4PM
      56°
      5PM
      56°
      6PM
      39%
      54°
      6:56PM
      Sunset
      7PM
      40%
      51°
      8PM
      41%
      48°
      9PM
      40%
      47°
      10PM
      40%
      45°
      11PM
      40%
      43°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      12:00 am
      Mostly Clear
      47°F 43°F 2% 0in 27% 43°F 86% 10 mph N 30.34in
      1:00 am
      Mostly Clear
      46°F 42°F 2% 0in 25% 43°F 89% 9 mph N 30.34in
      2:00 am
      Mostly Clear
      45°F 41°F 2% 0in 28% 43°F 91% 8 mph N 30.33in
      3:00 am
      Clear
      45°F 42°F 2% 0in 10% 42°F 90% 5 mph N 30.33in
      4:00 am
      Clear
      45°F 41°F 3% 0in 8% 42°F 90% 6 mph N 30.32in
      5:00 am
      Clear
      43°F 40°F 3% 0in 7% 42°F 95% 5 mph N 30.31in
      6:00 am
      Clear
      43°F 40°F 4% 0in 9% 41°F 95% 5 mph N 30.31in
      7:00 am
      Mostly Clear
      42°F 38°F 20% 0in 23% 41°F 96% 5 mph NNW 30.31in
      8:00 am
      Mostly Clear
      41°F 38°F 20% 0in 26% 41°F 98% 6 mph NNW 30.31in
      9:00 am
      Partly Cloudy
      43°F 40°F 20% 0in 36% 42°F 95% 5 mph NNW 30.3in
      10:00 am
      Partly Cloudy
      46°F 43°F 19% 0in 47% 43°F 90% 6 mph N 30.3in
      11:00 am
      Partly Cloudy
      49°F 46°F 4% 0in 34% 44°F 81% 7 mph N 30.3in
      12:00 pm
      Mostly Sunny
      52°F 49°F 2% 0in 22% 43°F 73% 8 mph NNE 30.29in
      1:00 pm
      Mostly Sunny
      54°F 51°F 2% 0in 23% 43°F 66% 9 mph NNE 30.28in
      2:00 pm
      Mostly Sunny
      55°F 53°F 4% 0in 24% 42°F 62% 8 mph NNE 30.26in
      3:00 pm
      Partly Cloudy
      56°F 54°F 20% 0in 47% 41°F 57% 8 mph NNE 30.25in
      4:00 pm
      Partly Cloudy
      56°F 55°F 20% 0in 46% 41°F 55% 8 mph NNE 30.24in
      5:00 pm
      Partly Cloudy
      56°F 54°F 6% 0in 46% 40°F 55% 8 mph NNE 30.24in
      6:00 pm
      Showers
      54°F 52°F 39% 0in 60% 40°F 59% 7 mph NNE 30.24in
      7:00 pm
      Showers
      51°F 49°F 40% 0in 61% 40°F 67% 5 mph NE 30.25in
      8:00 pm
      Showers
      48°F 47°F 41% 0in 67% 40°F 73% 4 mph NE 30.26in
      9:00 pm
      Showers
      47°F 46°F 40% 0in 68% 40°F 78% 4 mph NE 30.26in
      10:00 pm
      Showers
      45°F 45°F 40% 0in 63% 40°F 81% 2 mph NE 30.26in
      11:00 pm
      Showers
      43°F 43°F 40% 0in 59% 39°F 85% 2 mph ENE 30.27in
      Additional Conditions
      1. Pressure 30.33 in
      2. Visibility 6 miles
      3. Clouds Partly Cloudy
      4. Dew Point43°F
      5. Humidity 86%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      LFPN Station History
      Almanac for October 17, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 61°F 60°F 71°F 2017
      4. Low 44°F 46°F 37°F 2010
      5. Rain/Snow Depth
      6. Precipitation 0 in 0.08 in -
      7. Snow 0 in - in -
      Almanac for October 18, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 58°F 60°F 74°F
      4. Low 40°F 46°F 36°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 8:14 AM 6:58 PM
      3. Civil Twilight 7:42 AM 7:30 PM
      4. Nautical Twilight 7:06 AM 8:06PM
      5. Astronomical Twilight 6:29 AM 8:43 PM
      1. Length of Visible Light 11h 47m
      2. Length of Day 10h 43m
      3. Tomorrow will be 3 minutes 27 seconds shorter
      1. Moon 3:21 PM 11:01 PM
      2. Waxing Crescent39% of the Moon is Illuminated
      Oct 18
      Waxing Half First Qtr
      Oct 26
      Full Moon
      Nov 1
      Waning Half Last Qtr
      Nov 9
      New Moon
      Nearby Weather Stations
      Station Location
      Temp
      Windchill
      Heat Index
      Dew Point
      Humidity
      Wind
      Precip.
      Elev.
      Updated
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      Level Access
      Glossary