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Guymon climate
Typical historical weather for Guymon, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Guymon.
Annual average
14.7°C
across all months
Warmest month
34.1°C
Jul average high
Coolest month
-3.9°C
Jan average low
Annual rainfall
440mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
42.8°C
20 July 2018
Coldest day
-28.5°C
15 February 2021
Wettest day
84.1mm
12 July 2025
Windiest day
12.5m/s
13 March 2019
See the detail: Guymon on 12 July 2025.