Monthly outlook for Running Springs, CA: average high 77.9°, average low 57.5°. That is 7.4° below the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 9 August (87.2°), the coolest 16 August (53.3°).
77.9°/57.5°
Average high / low
−7.4°
Below normal
1 / 2
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
76.8°
91.5°
-8.2°
19 August – 28 August
79.8°
91.5°
-6.5°
29 August – 7 September
at normal
92.5°
—
August records over 66 years
111.7°18 August 2020All-time high
49.5°22 August 1968All-time low
Climate normals and records are computed from the nearest reference point — San Bernardino (11 mi).
Mon, 1083° / 61°0
83 °
Running Springs, Monday, 10 August
Partly cloudy. High 83°, low 61°.
Pressure29.94 inHg
Wind9.9 mph SW
Humidity21%
Visibility6.2 mi
Dew point44°
Tue, 1181° / 62°0.03
81 °
Running Springs, Tuesday, 11 August
Light rain. High 81°, low 62°.
Pressure29.97 inHg
Wind8.3 mph SW
Humidity24%
Visibility6.2 mi
Dew point43°
Wed, 1277° / 57°0
77 °
Running Springs, Wednesday, 12 August
Clear. High 77°, low 57°.
Pressure29.91 inHg
Wind9.6 mph SW
Humidity26%
Visibility6.2 mi
Dew point43°
Thu, 1374° / 55°0
74 °
Running Springs, Thursday, 13 August
Partly cloudy. High 74°, low 55°.
Pressure29.94 inHg
Wind9.5 mph SW
Humidity36%
Visibility—
Dew point40°
Fri, 1474° / 55°0
74 °
Running Springs, Friday, 14 August
Overcast. High 74°, low 55°.
Pressure29.97 inHg
Wind8 mph SW
Humidity29%
Visibility—
Dew point36°
Sat, 1563° / 54°0.1
63 °
Running Springs, Saturday, 15 August
Light rain. High 63°, low 54°.
Pressure30.06 inHg
Wind4.9 mph S
Humidity60%
Visibility—
Dew point46°
Sun, 1673° / 53°0
73 °
Running Springs, Sunday, 16 August
Overcast. High 73°, low 53°.
Pressure30.09 inHg
Wind10.9 mph SW
Humidity48%
Visibility—
Dew point47°
Mon, 1776° / 56°0
76 °
Running Springs, Monday, 17 August
Overcast. High 76°, low 56°.
Pressure30.09 inHg
Wind10.3 mph SW
Humidity29%
Visibility—
Dew point36°
Tue, 1877° / 56°0
77 °
Running Springs, Tuesday, 18 August
Partly cloudy. High 77°, low 56°.
Pressure29.97 inHg
Wind9.5 mph SW
Humidity29%
Visibility—
Dew point38°
Wed, 1978° / 58°0
78 °
Running Springs, Wednesday, 19 August
Overcast. High 78°, low 58°.
Pressure29.94 inHg
Wind10.9 mph SW
Humidity23%
Visibility—
Dew point32°
Thu, 2080° / 59°0
80 °
Running Springs, Thursday, 20 August
Overcast. High 80°, low 59°.
Pressure29.97 inHg
Wind11.4 mph SW
Humidity25%
Visibility—
Dew point36°
Fri, 2180° / 59°0
80 °
Running Springs, Friday, 21 August
Partly cloudy. High 80°, low 59°.
Pressure29.94 inHg
Wind10.9 mph SW
Humidity25%
Visibility—
Dew point36°
Sat, 2280° / 59°0
80 °
Running Springs, Saturday, 22 August
Clear. High 80°, low 59°.
Pressure29.97 inHg
Wind10.5 mph SW
Humidity23%
Visibility—
Dew point34°
Sun, 2379° / 58°0
79 °
Running Springs, Sunday, 23 August
Clear. High 79°, low 58°.
Pressure29.97 inHg
Wind10.3 mph SW
Humidity22%
Visibility—
Dew point33°
Mon, 2481° / 59°0
81 °
Running Springs, Monday, 24 August
Clear. High 81°, low 59°.
Pressure29.91 inHg
Wind9.6 mph SW
Humidity20%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2592° / 68°0.02
92 °
Running Springs, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high92°
Average low68°
Average precipitation0.02 in
Chance of precipitation10%
Record high104° (1985)
Record low56° (1990)
Wed, 2692° / 68°0.02
92 °
Running Springs, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high92°
Average low68°
Average precipitation0.02 in
Chance of precipitation10%
Record high103° (2011)
Record low55° (1973)
Thu, 2793° / 67°0.01
93 °
Running Springs, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high93°
Average low67°
Average precipitation0.01 in
Chance of precipitation8%
Record high105° (2021)
Record low55° (1973)
Fri, 2894° / 67°0.01
94 °
Running Springs, Friday, 28 August
Climate normal for this date — 60-year average.
Average high94°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high107° (2017)
Record low55° (1973)
Sat, 2994° / 68°0.01
94 °
Running Springs, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0.01 in
Chance of precipitation10%
Record high107° (2017)
Record low55° (2010)
Sun, 3093° / 68°0.02
93 °
Running Springs, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high93°
Average low68°
Average precipitation0.02 in
Chance of precipitation12%
Record high108° (2017)
Record low55° (2010)
Mon, 3192° / 67°0.01
92 °
Running Springs, Monday, 31 August
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0.01 in
Chance of precipitation7%
Record high107° (2022)
Record low54° (1964)
Tue, 0192° / 66°0.02
92 °
Running Springs, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0.02 in
Chance of precipitation10%
Record high107° (2017)
Record low54° (1964)
Wed, 0292° / 66°0.04
92 °
Running Springs, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0.04 in
Chance of precipitation15%
Record high105° (2007)
Record low50° (1964)
Thu, 0392° / 67°0.02
92 °
Running Springs, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0.02 in
Chance of precipitation10%
Record high110° (2022)
Record low55° (1999)
Fri, 0492° / 67°0.01
92 °
Running Springs, Friday, 4 September
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0.01 in
Chance of precipitation8%
Record high109° (2022)
Record low54° (1985)
Sat, 0592° / 67°0.01
92 °
Running Springs, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0.01 in
Chance of precipitation7%
Record high113° (2020)
Record low56° (2016)
Sun, 0692° / 67°0.01
92 °
Running Springs, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0.01 in
Chance of precipitation8%
Record high115° (2020)
Record low55° (2000)
Mon, 0792° / 67°0.01
92 °
Running Springs, Monday, 7 September
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0.01 in
Chance of precipitation7%
Record high109° (2024)
Record low52° (1965)
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 Running Springs, 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 Running Springs, 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.