10-day forecast for Saint Johns, ID: 59° to 99°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
99°
Best day: Tuesday, August 11
79° · 0.1 in
Worst day: Friday, August 14
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1096° / 62°0
Morning67°feels 65°
Afternoon95°feels 90°
Evening88°feels 84°
Overnight66°feels 64°
96 °
Saint Johns, Monday, 10 August
Clear. High 96°, low 62°.
Pressure29.83 inHg
Wind10.8 mph SW
Humidity19%
Visibility6.2 mi
Dew point43°
Tue, 1199° / 67°0
Morning75°feels 73°
Afternoon98°feels 93°
Evening88°feels 84°
Overnight71°feels 69°
99 °
Saint Johns, Tuesday, 11 August
Clear. High 99°, low 67°.
Pressure29.88 inHg
Wind5.8 mph SW
Humidity12%
Visibility6.2 mi
Dew point30°
Wed, 1289° / 71°0
Morning76°feels 74°
Afternoon91°feels 87°
Evening81°feels 79°
Overnight75°feels 73°
89 °
Saint Johns, Wednesday, 12 August
Overcast. High 89°, low 71°.
Pressure29.80 inHg
Wind11.9 mph N
Humidity15%
Visibility6.2 mi
Dew point34°
Thu, 1385° / 64°0.06
Morning69°feels 68°
Afternoon83°feels 81°
Evening81°feels 79°
Overnight69°feels 68°
85 °
Saint Johns, Thursday, 13 August
Light rain. High 85°, low 64°.
Pressure29.77 inHg
Wind15.1 mph SW
Humidity30%
Visibility—
Dew point46°
Fri, 1479° / 59°0.1
Morning65°feels 64°
Afternoon79°feels 78°
Evening78°feels 78°
Overnight67°feels 66°
79 °
Saint Johns, Friday, 14 August
Light rain. High 79°, low 59°.
Pressure29.91 inHg
Wind15.2 mph W
Humidity40%
Visibility—
Dew point50°
Sat, 1588° / 59°0
Morning65°feels 64°
Afternoon83°feels 81°
Evening86°feels 83°
Overnight71°feels 70°
88 °
Saint Johns, Saturday, 15 August
Clear. High 88°, low 59°.
Pressure30.03 inHg
Wind9 mph SW
Humidity27%
Visibility—
Dew point42°
Sun, 1681° / 66°0.04
Morning67°feels 66°
Afternoon70°feels 69°
Evening77°feels 76°
Overnight69°feels 68°
81 °
Saint Johns, Sunday, 16 August
Light rain. High 81°, low 66°.
Pressure30.12 inHg
Wind19 mph SW
Humidity62%
Visibility—
Dew point55°
Mon, 1786° / 64°0
Morning69°feels 68°
Afternoon81°feels 80°
Evening84°feels 81°
Overnight71°feels 70°
86 °
Saint Johns, Monday, 17 August
Overcast. High 86°, low 64°.
Pressure29.97 inHg
Wind19.7 mph SW
Humidity35%
Visibility—
Dew point48°
Tue, 1890° / 63°0
Morning70°feels 68°
Afternoon87°feels 84°
Evening86°feels 82°
Overnight72°feels 70°
90 °
Saint Johns, Tuesday, 18 August
Partly cloudy. High 90°, low 63°.
Pressure29.85 inHg
Wind19.5 mph SW
Humidity22%
Visibility—
Dew point40°
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 Johns, ID 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.