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

Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Garden City Regional Airport (KGCK)

Lat: 37.93°NLon: 100.72°WElev: 2890ft.

Fog/Mist

52°F

11°C

Humidity 100%
Wind Speed E 8 mph
Barometer 30.11 in (1018.3 mb)
Dewpoint 52°F (11°C)
Visibility 3.00 mi
Wind Chill49°F (9°C)
Last update 21 May 2:54 am CDT
Extended Forecast for

Grigston KS

  • Overnight

    Overnight: A chance of showers and thunderstorms. Cloudy, with a steady temperature around 48. East wind 11 to 13 mph. Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 65. Southeast wind 13 to 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 48. Southeast wind 11 to 16 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers

  • Friday

    Friday: Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and noon. Cloudy through mid morning, then gradual clearing, with a high near 69. South wind 9 to 18 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42. North wind 8 to 13 mph becoming light northeast after midnight.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 45. Chance of precipitation is 20%.

    Low: 45 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Cloudy, with a steady temperature around 48. East wind 11 to 13 mph. Chance of precipitation is 50%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 65. Southeast wind 13 to 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3am. Low around 48. Southeast wind 11 to 16 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and noon. Cloudy through mid morning, then gradual clearing, with a high near 69. South wind 9 to 18 mph becoming north in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 42. North wind 8 to 13 mph becoming light northeast after midnight.
Saturday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 45. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 51.
Memorial Day
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 53.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Breezy.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Breezy.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grigston KS
 38.48°N 100.73°W (Elev. 2933 ft)
Last Update:
1:41 am CDT May 21, 2026
Forecast Valid:
3am CDT May 21, 2026-6pm CDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation