Monthly outlook for Post Mountain, CA: average high 92.3°, average low 57.9°. That is 1.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.2 inches. The warmest day looks like 23 August (103.1°), the coolest 10 August (49.4°).
92.3°/57.9°
Average high / low
+1.4°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87.4°
91°
-2°
19 August – 28 August
100.4°
87.6°
+7.1°
29 August – 7 September
at normal
87°
—
August records over 66 years
109.6°8 August 1981All-time high
42.4°25 August 2024All-time low
Climate normals and records are computed from the nearest reference point — Hayfork (11 mi).
Mon, 1087° / 49°0
87 °
Post Mountain, Monday, 10 August
Clear. High 87°, low 49°.
Pressure29.83 inHg
Wind2.4 mph N
Humidity11%
Visibility6.2 mi
Dew point34°
Tue, 1195° / 57°0
95 °
Post Mountain, Tuesday, 11 August
Clear. High 95°, low 57°.
Pressure29.88 inHg
Wind1.4 mph NE
Humidity12%
Visibility6.2 mi
Dew point32°
Wed, 1295° / 55°0
95 °
Post Mountain, Wednesday, 12 August
Clear. High 95°, low 55°.
Pressure29.77 inHg
Wind3.8 mph NE
Humidity11%
Visibility6.2 mi
Dew point30°
Thu, 1389° / 56°0
89 °
Post Mountain, Thursday, 13 August
Clear. High 89°, low 56°.
Pressure29.71 inHg
Wind7.3 mph W
Humidity14%
Visibility—
Dew point31°
Fri, 1488° / 54°0
88 °
Post Mountain, Friday, 14 August
Mostly clear. High 88°, low 54°.
Pressure29.83 inHg
Wind5.5 mph W
Humidity17%
Visibility—
Dew point35°
Sat, 1585° / 52°0
85 °
Post Mountain, Saturday, 15 August
Clear. High 85°, low 52°.
Pressure29.91 inHg
Wind6 mph E
Humidity20%
Visibility—
Dew point37°
Sun, 1670° / 53°0
70 °
Post Mountain, Sunday, 16 August
Overcast. High 70°, low 53°.
Pressure30.09 inHg
Wind4.2 mph NE
Humidity47%
Visibility—
Dew point48°
Mon, 1788° / 52°0
88 °
Post Mountain, Monday, 17 August
Partly cloudy. High 88°, low 52°.
Pressure30.03 inHg
Wind8.6 mph SW
Humidity23%
Visibility—
Dew point43°
Tue, 1891° / 57°0
91 °
Post Mountain, Tuesday, 18 August
Clear. High 91°, low 57°.
Pressure30.00 inHg
Wind11.2 mph W
Humidity16%
Visibility—
Dew point36°
Wed, 1996° / 59°0
96 °
Post Mountain, Wednesday, 19 August
Overcast. High 96°, low 59°.
Pressure29.94 inHg
Wind10.6 mph W
Humidity16%
Visibility—
Dew point39°
Thu, 20101° / 63°0
101 °
Post Mountain, Thursday, 20 August
Clear. High 101°, low 63°.
Pressure29.85 inHg
Wind11.3 mph W
Humidity13%
Visibility—
Dew point38°
Fri, 21101° / 67°0
101 °
Post Mountain, Friday, 21 August
Light rain. High 101°, low 67°.
Pressure29.80 inHg
Wind12.6 mph W
Humidity11%
Visibility—
Dew point34°
Sat, 22100° / 68°0
100 °
Post Mountain, Saturday, 22 August
Clear. High 100°, low 68°.
Pressure29.88 inHg
Wind12.6 mph W
Humidity10%
Visibility—
Dew point31°
Sun, 23103° / 68°0
103 °
Post Mountain, Sunday, 23 August
Clear. High 103°, low 68°.
Pressure29.94 inHg
Wind13.9 mph W
Humidity8%
Visibility—
Dew point28°
Mon, 24101° / 68°0
101 °
Post Mountain, Monday, 24 August
Partly cloudy. High 101°, low 68°.
Pressure29.88 inHg
Wind13.6 mph W
Humidity9%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2587° / 58°0.04
87 °
Post Mountain, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0.04 in
Chance of precipitation8%
Record high101° (2010)
Record low42° (2024)
Wed, 2687° / 58°0.02
87 °
Post Mountain, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0.02 in
Chance of precipitation5%
Record high99° (1999)
Record low46° (1966)
Thu, 2788° / 58°0.01
88 °
Post Mountain, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low58°
Average precipitation0.01 in
Chance of precipitation5%
Record high103° (2019)
Record low48° (1977)
Fri, 2888° / 59°0.01
88 °
Post Mountain, Friday, 28 August
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0.01 in
Chance of precipitation5%
Record high100° (1988)
Record low50° (1969)
Sat, 2988° / 59°0.02
88 °
Post Mountain, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0.02 in
Chance of precipitation8%
Record high100° (1988)
Record low46° (2010)
Sun, 3086° / 58°0.06
86 °
Post Mountain, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low58°
Average precipitation0.06 in
Chance of precipitation5%
Record high100° (1988)
Record low45° (2010)
Mon, 3187° / 57°0.03
87 °
Post Mountain, Monday, 31 August
Climate normal for this date — 60-year average.
Average high87°
Average low57°
Average precipitation0.03 in
Chance of precipitation3%
Record high102° (1998)
Record low44° (1999)
Tue, 0187° / 58°0.02
87 °
Post Mountain, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0.02 in
Chance of precipitation7%
Record high103° (1998)
Record low44° (1999)
Wed, 0288° / 58°0
88 °
Post Mountain, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high88°
Average low58°
Average precipitation0 in
Chance of precipitation7%
Record high106° (1998)
Record low45° (1961)
Thu, 0387° / 58°0
87 °
Post Mountain, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high103° (1988)
Record low45° (2000)
Fri, 0487° / 58°0.01
87 °
Post Mountain, Friday, 4 September
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0.01 in
Chance of precipitation5%
Record high103° (1988)
Record low45° (1960)
Sat, 0587° / 58°0.01
87 °
Post Mountain, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0.01 in
Chance of precipitation2%
Record high104° (2022)
Record low41° (2000)
Sun, 0687° / 58°0
87 °
Post Mountain, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0 in
Chance of precipitation5%
Record high105° (2020)
Record low44° (2002)
Mon, 0786° / 58°0.01
86 °
Post Mountain, Monday, 7 September
Climate normal for this date — 60-year average.
Average high86°
Average low58°
Average precipitation0.01 in
Chance of precipitation7%
Record high102° (2020)
Record low43° (1978)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Post Mountain, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Post Mountain, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.