10-day forecast for Johnstown, CA: 69° to 96°, with precipitation expected on 1 day. The table below breaks each day into morning, afternoon, evening and overnight.
96°
Best day: Saturday, August 8
92° · 0.07 in
Worst day: Sunday, August 9
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0992° / 69°0.07
Morning77°feels 76°
Afternoon90°feels 89°
Evening77°feels 76°
Overnight72°feels 71°
92 °
Johnstown, Sunday, 9 August
Light rain. High 92°, low 69°.
Pressure29.83 inHg
Wind10.6 mph W
Humidity28%
Visibility6.2 mi
Dew point57°
Mon, 1092° / 69°0
Morning77°feels 76°
Afternoon92°feels 91°
Evening81°feels 81°
Overnight72°feels 72°
92 °
Johnstown, Monday, 10 August
Clear. High 92°, low 69°.
Pressure29.91 inHg
Wind10.3 mph W
Humidity36%
Visibility6.2 mi
Dew point59°
Tue, 1192° / 75°0.01
Morning78°feels 78°
Afternoon92°feels 90°
Evening80°feels 81°
Overnight77°feels 77°
92 °
Johnstown, Tuesday, 11 August
Light rain. High 92°, low 75°.
Pressure29.94 inHg
Wind7.9 mph W
Humidity31%
Visibility6.2 mi
Dew point55°
Wed, 1292° / 72°0
Morning78°feels 77°
Afternoon92°feels 90°
Evening84°feels 83°
Overnight75°feels 75°
92 °
Johnstown, Wednesday, 12 August
Clear. High 92°, low 72°.
Pressure29.88 inHg
Wind8.7 mph W
Humidity31%
Visibility6.2 mi
Dew point54°
Thu, 1385° / 70°0
Morning73°feels 73°
Afternoon80°feels 81°
Evening81°feels 81°
Overnight72°feels 72°
85 °
Johnstown, Thursday, 13 August
Overcast. High 85°, low 70°.
Pressure29.91 inHg
Wind9.5 mph W
Humidity48%
Visibility—
Dew point57°
Fri, 1484° / 70°0
Morning73°feels 73°
Afternoon80°feels 80°
Evening82°feels 82°
Overnight71°feels 71°
84 °
Johnstown, Friday, 14 August
Overcast. High 84°, low 70°.
Pressure29.97 inHg
Wind8.9 mph W
Humidity50%
Visibility—
Dew point58°
Sat, 1591° / 69°0
Morning74°feels 74°
Afternoon86°feels 85°
Evening84°feels 83°
Overnight73°feels 73°
91 °
Johnstown, Saturday, 15 August
Partly cloudy. High 91°, low 69°.
Pressure30.00 inHg
Wind12.3 mph W
Humidity39%
Visibility—
Dew point55°
Sun, 1693° / 71°0
Morning76°feels 75°
Afternoon88°feels 85°
Evening87°feels 84°
Overnight75°feels 74°
93 °
Johnstown, Sunday, 16 August
Overcast. High 93°, low 71°.
Pressure30.03 inHg
Wind12.7 mph W
Humidity29%
Visibility—
Dew point50°
Mon, 1794° / 73°0
Morning78°feels 77°
Afternoon91°feels 88°
Evening91°feels 88°
Overnight77°feels 76°
94 °
Johnstown, Monday, 17 August
Clear. High 94°, low 73°.
Pressure29.97 inHg
Wind12 mph W
Humidity26%
Visibility—
Dew point49°
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 Johnstown, CA 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.