10-day forecast for St. Marys, KS: 73° to 111°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
111°
Best day: Tuesday, August 11
99° · 0.15 in
Worst day: Sunday, August 9
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1099° / 78°0
Morning81°feels 81°
Afternoon99°feels 98°
Evening92°feels 90°
Overnight83°feels 85°
99 °
St. Marys, Monday, 10 August
Overcast. High 99°, low 78°.
Pressure29.83 inHg
Wind16.8 mph SW
Humidity32%
Visibility6.2 mi
Dew point63°
Tue, 11111° / 78°0.03
Morning83°feels 84°
Afternoon108°feels 108°
Evening78°feels 79°
Overnight88°feels 88°
111 °
St. Marys, Tuesday, 11 August
Light rain. High 111°, low 78°.
Pressure29.74 inHg
Wind18.3 mph SW
Humidity27%
Visibility6.2 mi
Dew point61°
Wed, 12108° / 75°0.03
Morning78°feels 79°
Afternoon105°feels 105°
Evening84°feels 86°
Overnight82°feels 83°
108 °
St. Marys, Wednesday, 12 August
Light rain. High 108°, low 75°.
Pressure29.74 inHg
Wind4.8 mph W
Humidity32%
Visibility6.2 mi
Dew point61°
Thu, 13105° / 77°0.01
Morning81°feels 82°
Afternoon107°feels 108°
Evening101°feels 100°
Overnight80°feels 80°
105 °
St. Marys, Thursday, 13 August
Light rain. High 105°, low 77°.
Pressure29.71 inHg
Wind13.7 mph SW
Humidity27%
Visibility6.2 mi
Dew point62°
Fri, 14106° / 81°0
Morning89°feels 89°
Afternoon106°feels 107°
Evening101°feels 101°
Overnight81°feels 82°
106 °
St. Marys, Friday, 14 August
Overcast. High 106°, low 81°.
Pressure29.74 inHg
Wind21.2 mph SW
Humidity21%
Visibility—
Dew point55°
Sat, 15106° / 78°0
Morning86°feels 86°
Afternoon105°feels 106°
Evening99°feels 100°
Overnight84°feels 85°
106 °
St. Marys, Saturday, 15 August
Clear. High 106°, low 78°.
Pressure29.83 inHg
Wind23.3 mph W
Humidity21%
Visibility—
Dew point55°
Sun, 1695° / 74°0.01
Morning78°feels 79°
Afternoon87°feels 90°
Evening89°feels 93°
Overnight80°feels 82°
95 °
St. Marys, Sunday, 16 August
Light rain. High 95°, low 74°.
Pressure30.00 inHg
Wind13 mph E
Humidity50%
Visibility—
Dew point64°
Mon, 17108° / 73°0.04
Morning82°feels 82°
Afternoon103°feels 101°
Evening85°feels 85°
Overnight77°feels 78°
108 °
St. Marys, Monday, 17 August
Light rain. High 108°, low 73°.
Pressure29.74 inHg
Wind19.8 mph SW
Humidity16%
Visibility—
Dew point47°
Tue, 18101° / 74°0.1
Morning81°feels 82°
Afternoon97°feels 97°
Evening92°feels 91°
Overnight82°feels 81°
101 °
St. Marys, Tuesday, 18 August
Light rain. High 101°, low 74°.
Pressure29.91 inHg
Wind8.8 mph W
Humidity28%
Visibility—
Dew point56°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in St. Marys, KS around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.