Climate almanac
Guymon
Oklahoma, United States · 36.68°, -101.48°
What is the climate like in Guymon?
The best time to visit Guymon is typically March – November, with trip comfort peaking in September (8.7/10). Guymon is warmest in July, when daily highs average 94°F (35°C), and coolest in January, when lows fall to about 26°F (-3°C). The wettest month is typically May and the driest is February; the year sees roughly 17 in (440 mm) of precipitation.
- Best time to visitMarch – November — comfort peaks in September (8.7/10)
- Warmest monthJuly — average high 94°F (35°C)
- Coolest monthJanuary — average low 26°F (-3°C)
- Wettest monthMay (3.0 in (76 mm))
- Driest monthFebruary (0.5 in (12 mm))
- Annual precipitation17 in (440 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromGoodwell Rsch Stn, 16 km away (1910-2026)