Monthly outlook for Rocky Hill, CA: average high 101.1°, average low 65.6°. That is 3.3° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 10 August (111°), the coolest 18 August (57.7°).
101.1°/65.6°
Average high / low
+3.3°
Above normal
1 / 0
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
101.5°
96°
+3.1°
19 August – 28 August
100.4°
93.9°
+3.6°
29 August – 7 September
at normal
94°
—
August records over 66 years
115.3°16 August 2020All-time high
56.5°31 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Linnell Camp (6 mi).
Mon, 10111° / 76°0
111 °
Rocky Hill, Monday, 10 August
Overcast. High 111°, low 76°.
Pressure29.80 inHg
Wind3.9 mph SW
Humidity9%
Visibility6.2 mi
Dew point37°
Tue, 11110° / 73°0
110 °
Rocky Hill, Tuesday, 11 August
Overcast. High 110°, low 73°.
Pressure29.83 inHg
Wind4.8 mph SW
Humidity11%
Visibility6.2 mi
Dew point37°
Wed, 12105° / 73°0.01
105 °
Rocky Hill, Wednesday, 12 August
Light rain. High 105°, low 73°.
Pressure29.77 inHg
Wind6.4 mph W
Humidity12%
Visibility6.2 mi
Dew point38°
Thu, 13100° / 67°0.04
100 °
Rocky Hill, Thursday, 13 August
Light rain. High 100°, low 67°.
Pressure29.74 inHg
Wind13.8 mph W
Humidity12%
Visibility—
Dew point36°
Fri, 14101° / 62°0
101 °
Rocky Hill, Friday, 14 August
Clear. High 101°, low 62°.
Pressure29.83 inHg
Wind8.9 mph SE
Humidity16%
Visibility—
Dew point40°
Sat, 1585° / 63°0.01
85 °
Rocky Hill, Saturday, 15 August
Light rain. High 85°, low 63°.
Pressure29.97 inHg
Wind11 mph SW
Humidity30%
Visibility—
Dew point44°
Sun, 1699° / 70°0
99 °
Rocky Hill, Sunday, 16 August
Mostly clear. High 99°, low 70°.
Pressure29.97 inHg
Wind13.8 mph W
Humidity22%
Visibility—
Dew point47°
Mon, 1799° / 61°0
99 °
Rocky Hill, Monday, 17 August
Clear. High 99°, low 61°.
Pressure29.94 inHg
Wind9.6 mph SE
Humidity17%
Visibility—
Dew point40°
Tue, 1896° / 58°0
96 °
Rocky Hill, Tuesday, 18 August
Overcast. High 96°, low 58°.
Pressure29.88 inHg
Wind8.9 mph NW
Humidity19%
Visibility—
Dew point40°
Wed, 1998° / 61°0
98 °
Rocky Hill, Wednesday, 19 August
Clear. High 98°, low 61°.
Pressure29.85 inHg
Wind7.5 mph NW
Humidity21%
Visibility—
Dew point45°
Thu, 20100° / 63°0
100 °
Rocky Hill, Thursday, 20 August
Clear. High 100°, low 63°.
Pressure29.83 inHg
Wind7.2 mph N
Humidity19%
Visibility—
Dew point45°
Fri, 2198° / 61°0
98 °
Rocky Hill, Friday, 21 August
Mostly clear. High 98°, low 61°.
Pressure29.91 inHg
Wind8.9 mph SE
Humidity31%
Visibility—
Dew point48°
Sat, 22101° / 61°0
101 °
Rocky Hill, Saturday, 22 August
Clear. High 101°, low 61°.
Pressure29.91 inHg
Wind8 mph N
Humidity25%
Visibility—
Dew point42°
Sun, 23102° / 64°0
102 °
Rocky Hill, Sunday, 23 August
Clear. High 102°, low 64°.
Pressure29.88 inHg
Wind8.7 mph SE
Humidity20%
Visibility—
Dew point39°
Mon, 24103° / 61°0
103 °
Rocky Hill, Monday, 24 August
Clear. High 103°, low 61°.
Pressure29.85 inHg
Wind6 mph SE
Humidity21%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2594° / 68°0
94 °
Rocky Hill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2010)
Record low59° (1990)
Wed, 2694° / 68°0
94 °
Rocky Hill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2022)
Record low58° (1990)
Thu, 2795° / 68°0
95 °
Rocky Hill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high95°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2019)
Record low58° (1973)
Fri, 2895° / 68°0
95 °
Rocky Hill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high95°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2021)
Record low61° (1963)
Sat, 2995° / 69°0
95 °
Rocky Hill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high95°
Average low69°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2021)
Record low59° (2010)
Sun, 3094° / 68°0
94 °
Rocky Hill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high110° (2021)
Record low59° (1966)
Mon, 3194° / 68°0
94 °
Rocky Hill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2022)
Record low56° (1964)
Tue, 0194° / 68°0
94 °
Rocky Hill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high94°
Average low68°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2022)
Record low54° (1964)
Wed, 0295° / 68°0
95 °
Rocky Hill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high95°
Average low68°
Average precipitation0 in
Chance of precipitation0%
Record high112° (2022)
Record low54° (1964)
Thu, 0394° / 69°0
94 °
Rocky Hill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high94°
Average low69°
Average precipitation0 in
Chance of precipitation5%
Record high108° (2022)
Record low55° (1964)
Fri, 0493° / 68°0.01
93 °
Rocky Hill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high93°
Average low68°
Average precipitation0.01 in
Chance of precipitation3%
Record high111° (2022)
Record low57° (2000)
Sat, 0593° / 67°0.02
93 °
Rocky Hill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high93°
Average low67°
Average precipitation0.02 in
Chance of precipitation8%
Record high113° (2022)
Record low57° (2000)
Sun, 0694° / 67°0.01
94 °
Rocky Hill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high94°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high117° (2022)
Record low57° (1970)
Mon, 0794° / 67°0.01
94 °
Rocky Hill, Monday, 7 September
Climate normal for this date — 60-year average.
Average high94°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high114° (2020)
Record low57° (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 Rocky Hill, 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 Rocky Hill, 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.