National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Lafayette, Purdue University Airport (KLAF)

Lat: 40.41°NLon: 86.95°WElev: 604ft.

Fair

89°F

32°C

Humidity 53%
Wind Speed S 5 mph
Barometer 30.15 in (1020.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 17 Sep 3:54 pm EDT
Extended Forecast for

5 Miles WSW Brookston IN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 87. West wind around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 8pm and 3am. Mostly cloudy, with a low around 67. North wind around 5 mph.

    Low: 67 °F

    Chance
    T-storms

  • Friday

    Friday: A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 77. Northeast wind around 5 mph.

    High: 77 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 83. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70.

    High: 70 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 87. West wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 8pm and 3am. Mostly cloudy, with a low around 67. North wind around 5 mph.
Friday
A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 77. Northeast wind around 5 mph.
Friday Night
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 83. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70.
Monday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 68.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Brookston IN
 40.58°N 86.96°W (Elev. 728 ft)
Last Update:
4:15 pm EDT Sep 17, 2026
Forecast Valid:
4pm EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation