10-day forecast for Saint John, TN: 66° to 95°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
95°
Best day: Sunday, August 16
90° · 0.64 in
Worst day: Thursday, August 13
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1094° / 72°0
Morning77°feels 79°
Afternoon94°feels 100°
Evening78°feels 80°
Overnight73°feels 74°
94 °
Saint John, Monday, 10 August
Clear. High 94°, low 72°.
Pressure30.09 inHg
Wind6.8 mph SW
Humidity54%
Visibility6.2 mi
Dew point70°
Tue, 1192° / 71°0.02
Morning77°feels 78°
Afternoon92°feels 100°
Evening80°feels 80°
Overnight73°feels 74°
92 °
Saint John, Tuesday, 11 August
Light rain. High 92°, low 71°.
Pressure30.03 inHg
Wind8.8 mph SW
Humidity52%
Visibility6.2 mi
Dew point71°
Wed, 1294° / 74°0.11
Morning78°feels 79°
Afternoon94°feels 100°
Evening81°feels 86°
Overnight74°feels 76°
94 °
Saint John, Wednesday, 12 August
Light rain. High 94°, low 74°.
Pressure29.91 inHg
Wind11.5 mph SW
Humidity52%
Visibility6.2 mi
Dew point70°
Thu, 1390° / 66°0.64
Morning75°feels 78°
Afternoon88°feels 93°
Evening79°feels 79°
Overnight68°feels 69°
90 °
Saint John, Thursday, 13 August
Heavy rain. High 90°, low 66°.
Pressure29.94 inHg
Wind9.1 mph E
Humidity54%
Visibility—
Dew point68°
Fri, 1493° / 70°0.28
Morning79°feels 82°
Afternoon90°feels 96°
Evening73°feels 74°
Overnight70°feels 72°
93 °
Saint John, Friday, 14 August
Light rain. High 93°, low 70°.
Pressure30.00 inHg
Wind9.1 mph W
Humidity51%
Visibility—
Dew point69°
Sat, 1585° / 66°0.23
Morning73°feels 76°
Afternoon84°feels 90°
Evening78°feels 78°
Overnight71°feels 73°
85 °
Saint John, Saturday, 15 August
Rain. High 85°, low 66°.
Pressure30.15 inHg
Wind6.3 mph NE
Humidity67%
Visibility—
Dew point71°
Sun, 1695° / 70°0
Morning79°feels 83°
Afternoon89°feels 97°
Evening83°feels 90°
Overnight76°feels 78°
95 °
Saint John, Sunday, 16 August
Partly cloudy. High 95°, low 70°.
Pressure30.06 inHg
Wind7.7 mph W
Humidity58%
Visibility—
Dew point71°
Mon, 1789° / 72°0.02
Morning78°feels 81°
Afternoon88°feels 92°
Evening77°feels 78°
Overnight73°feels 74°
89 °
Saint John, Monday, 17 August
Light rain. High 89°, low 72°.
Pressure30.00 inHg
Wind10 mph N
Humidity52%
Visibility—
Dew point67°
Tue, 1889° / 68°0
Morning75°feels 75°
Afternoon86°feels 87°
Evening76°feels 77°
Overnight70°feels 70°
89 °
Saint John, Tuesday, 18 August
Clear. High 89°, low 68°.
Pressure30.00 inHg
Wind5.2 mph NE
Humidity44%
Visibility—
Dew point61°
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 Saint John, TN 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.