Monthly outlook for Colton, CA: average high 96.8°, average low 74.6°. That is 3.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 19 August (101°), the coolest 8 August (68.9°).
96.8°/74.6°
Average high / low
+3.4°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
96.1°
91.2°
+2.7°
18 August – 27 August
98°
90.4°
+4.2°
28 August – 6 September
at normal
92.2°
—
August records over 66 years
109.6°18 August 2020All-time high
48.9°22 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Rialto (6 mi).
Sun, 09100° / 74°0
100 °
Colton, Sunday, 9 August
Clear. High 100°, low 74°.
Pressure29.83 inHg
Wind7.4 mph W
Humidity19%
Visibility6.2 mi
Dew point48°
Mon, 10100° / 75°0
100 °
Colton, Monday, 10 August
Mostly clear. High 100°, low 75°.
Pressure29.88 inHg
Wind6.9 mph W
Humidity21%
Visibility6.2 mi
Dew point50°
Tue, 1195° / 75°0
95 °
Colton, Tuesday, 11 August
Overcast. High 95°, low 75°.
Pressure29.94 inHg
Wind7.1 mph W
Humidity22%
Visibility6.2 mi
Dew point47°
Wed, 1294° / 75°0
94 °
Colton, Wednesday, 12 August
Overcast. High 94°, low 75°.
Pressure29.88 inHg
Wind6.3 mph W
Humidity24%
Visibility6.2 mi
Dew point48°
Thu, 1391° / 71°0
91 °
Colton, Thursday, 13 August
Partly cloudy. High 91°, low 71°.
Pressure29.91 inHg
Wind12.7 mph W
Humidity38%
Visibility—
Dew point52°
Fri, 1491° / 71°0
91 °
Colton, Friday, 14 August
Overcast. High 91°, low 71°.
Pressure29.97 inHg
Wind12.7 mph W
Humidity34%
Visibility—
Dew point51°
Sat, 1596° / 72°0
96 °
Colton, Saturday, 15 August
Clear. High 96°, low 72°.
Pressure30.00 inHg
Wind11.1 mph W
Humidity29%
Visibility—
Dew point50°
Sun, 1698° / 75°0
98 °
Colton, Sunday, 16 August
Partly cloudy. High 98°, low 75°.
Pressure29.97 inHg
Wind12.1 mph W
Humidity24%
Visibility—
Dew point47°
Mon, 1798° / 75°0
98 °
Colton, Monday, 17 August
Mostly clear. High 98°, low 75°.
Pressure30.03 inHg
Wind11.5 mph W
Humidity22%
Visibility—
Dew point45°
Tue, 1899° / 77°0
99 °
Colton, Tuesday, 18 August
Clear. High 99°, low 77°.
Pressure29.94 inHg
Wind11.3 mph W
Humidity21%
Visibility—
Dew point46°
Wed, 19101° / 79°0
101 °
Colton, Wednesday, 19 August
Clear. High 101°, low 79°.
Pressure29.88 inHg
Wind11.5 mph W
Humidity22%
Visibility—
Dew point48°
Thu, 20100° / 78°0
100 °
Colton, Thursday, 20 August
Partly cloudy. High 100°, low 78°.
Pressure29.88 inHg
Wind11.6 mph W
Humidity26%
Visibility—
Dew point52°
Fri, 2197° / 77°0
97 °
Colton, Friday, 21 August
Overcast. High 97°, low 77°.
Pressure29.88 inHg
Wind7.7 mph W
Humidity31%
Visibility—
Dew point55°
Sat, 2296° / 77°0.02
96 °
Colton, Saturday, 22 August
Light rain. High 96°, low 77°.
Pressure29.85 inHg
Wind8.8 mph W
Humidity36%
Visibility—
Dew point58°
Sun, 2395° / 75°0
95 °
Colton, Sunday, 23 August
Overcast. High 95°, low 75°.
Pressure29.88 inHg
Wind10.9 mph W
Humidity38%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2491° / 65°0
91 °
Colton, Monday, 24 August
Climate normal for this date — 60-year average.
Average high91°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2010)
Record low55° (1983)
Tue, 2591° / 66°0
91 °
Colton, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high105° (1985)
Record low56° (1983)
Wed, 2691° / 66°0
91 °
Colton, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high103° (2011)
Record low54° (1990)
Thu, 2792° / 66°0
92 °
Colton, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high105° (1981)
Record low54° (1973)
Fri, 2894° / 66°0
94 °
Colton, Friday, 28 August
Climate normal for this date — 60-year average.
Average high94°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2017)
Record low54° (1973)
Sat, 2994° / 67°0
94 °
Colton, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high94°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high107° (2017)
Record low54° (2010)
Sun, 3092° / 67°0
92 °
Colton, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2017)
Record low55° (2010)
Mon, 3191° / 66°0
91 °
Colton, Monday, 31 August
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high107° (2022)
Record low53° (1964)
Tue, 0192° / 65°0
92 °
Colton, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high92°
Average low65°
Average precipitation0 in
Chance of precipitation5%
Record high107° (2022)
Record low53° (1964)
Wed, 0292° / 65°0.02
92 °
Colton, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high92°
Average low65°
Average precipitation0.02 in
Chance of precipitation8%
Record high106° (2007)
Record low50° (1964)
Thu, 0391° / 66°0
91 °
Colton, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation5%
Record high108° (2022)
Record low54° (1964)
Fri, 0492° / 66°0
92 °
Colton, Friday, 4 September
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high108° (2022)
Record low54° (1985)
Sat, 0592° / 66°0.01
92 °
Colton, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high113° (2020)
Record low56° (2016)
Sun, 0692° / 66°0.02
92 °
Colton, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0.02 in
Chance of precipitation3%
Record high115° (2020)
Record low54° (2000)
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 Colton, 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 Colton, 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.