Old Grassy Lake, OK 14 Day Weather
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Old Grassy Lake, OK Weather Forecast


Old Grassy Lake, OK Weather Forecast Dated: 452 PM Mon Aug 31 2026 (Old Grassy Lake Time)
Expect a hot stretch with plenty of sunshine and mostly dry weather over the next two weeks. comfortable humidity and no major pressure swings will dominate.
Monday, August 31, 2026
Mid-Morning
81°F 27°C
Sunny
Mid-Afternoon
102°F 39°C
Sunny
Early-Evening
94°F 34°C
Sunny
Dangerously hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and barometric pressure falling. Winds shifting from SSW to SSE at 10 mph 16 km/h.
Tuesday, September 1, 2026
Mid-Morning
85°F 30°C
Sunny
Mid-Afternoon
102°F 39°C
Cloudy
Early-Evening
97°F 36°C
Overcast
Dangerously hot with mostly cloudy skies, lower humidity and barometric pressure falling. Winds shifting from S to SSE at 14 mph 23 km/h.
Wednesday, September 2, 2026
Mid-Morning
81°F 27°C
Sunny
Mid-Afternoon
99°F 37°C
Partly Cloudy
Early-Evening
91°F 33°C
Overcast
Hot with mostly sunny skies in the morning, then partly sunny for the afternoon and evening, lower humidity and barometric pressure falling. Winds SSE at 14 mph 22 km/h.
Thursday, September 3, 2026
Mid-Morning
81°F 27°C
Sunny
Mid-Afternoon
94°F 34°C
Cloudy
Early-Evening
87°F 31°C
Sunny
Hot with mostly cloudy skies, lower humidity and steady pressure. Winds S at 17 mph 27 km/h.
Friday, September 4, 2026
Mid-Morning
82°F 28°C
Sunny
Mid-Afternoon
99°F 37°C
Partly Cloudy
Early-Evening
93°F 34°C
Partly Cloudy
Hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SSW to S at 10 mph 16 km/h.
Saturday, September 5, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
100°F 38°C
Overcast
Early-Evening
95°F 35°C
Partly Cloudy
Dangerously hot with overcast skies, lower humidity and steady pressure. Winds shifting from SSW to SSE at 10 mph 17 km/h.
Sunday, September 6, 2026
Mid-Morning
88°F 31°C
Sunny
Mid-Afternoon
103°F 39°C
Sunny
Early-Evening
96°F 36°C
Partly Cloudy
Dangerously hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SSW to SSE at 12 mph 18 km/h.
Monday, September 7, 2026
Mid-Morning
91°F 33°C
Sunny
Mid-Afternoon
106°F 41°C
Sunny
Early-Evening
102°F 39°C
Cloudy
Dangerously hot with mostly sunny skies in the morning, partly sunny in the afternoon, and mostly sunny in the evening, lower humidity and steady pressure. Winds shifting from SW to S at 10 mph 15 km/h.
Tuesday, September 8, 2026
Mid-Morning
95°F 35°C
Overcast
Mid-Afternoon
110°F 43°C
Overcast
Early-Evening
104°F 40°C
Cloudy
Dangerously hot with overcast skies, lower humidity and barometric pressure falling. Winds shifting from WSW to SSW at 10 mph 15 km/h.
Wednesday, September 9, 2026
Mid-Morning
93°F 34°C
Sunny
Mid-Afternoon
108°F 42°C
Sunny
Early-Evening
101°F 39°C
Sunny
Dangerously hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SW to SSW at 14 mph 22 km/h.
Thursday, September 10, 2026
Mid-Morning
89°F 32°C
Sunny
Mid-Afternoon
104°F 40°C
Sunny
Early-Evening
98°F 37°C
Sunny
Dangerously hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SSW to S at 13 mph 21 km/h.
Friday, September 11, 2026
Mid-Morning
90°F 32°C
Cloudy
Mid-Afternoon
106°F 41°C
Sunny
Early-Evening
101°F 38°C
Sunny
Dangerously hot with mostly cloudy skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and barometric pressure falling. Winds shifting from SW to SSW at 11 mph 17 km/h.
Saturday, September 12, 2026
Mid-Morning
91°F 33°C
Partly Cloudy
Mid-Afternoon
107°F 42°C
Sunny
Early-Evening
101°F 39°C
Sunny
Dangerously hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and steady pressure. Winds shifting from SW to SSW at 10 mph 16 km/h.
Sunday, September 13, 2026
Mid-Morning
92°F 34°C
Sunny
Mid-Afternoon
108°F 42°C
Sunny
Early-Evening
102°F 39°C
Sunny
Dangerously hot with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, lower humidity and barometric pressure falling. Winds shifting from SW to SSW at 12 mph 20 km/h.
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