Monthly outlook for Rockville, CA: average high 82°, average low 57.2°. That is 2.8° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.0 inches. The warmest day looks like 9 August (94.5°), the coolest 24 August (53.6°).
82°/57.2°
Average high / low
−2.8°
Below normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.6°
87.8°
-2.9°
19 August – 28 August
81.1°
86.6°
-3.1°
29 August – 7 September
at normal
88°
—
August records over 66 years
107.2°17 August 2020All-time high
51.3°23 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Fairfield (5 mi).
Mon, 1088° / 59°0
88 °
Rockville, Monday, 10 August
Clear. High 88°, low 59°.
Pressure29.85 inHg
Wind9 mph SW
Humidity32%
Visibility6.2 mi
Dew point49°
Tue, 1185° / 56°0
85 °
Rockville, Tuesday, 11 August
Clear. High 85°, low 56°.
Pressure29.91 inHg
Wind7.7 mph SW
Humidity32%
Visibility6.2 mi
Dew point49°
Wed, 1279° / 57°0
79 °
Rockville, Wednesday, 12 August
Clear. High 79°, low 57°.
Pressure29.83 inHg
Wind9.1 mph SW
Humidity42%
Visibility6.2 mi
Dew point52°
Thu, 1376° / 56°0
76 °
Rockville, Thursday, 13 August
Overcast. High 76°, low 56°.
Pressure29.85 inHg
Wind11.1 mph SW
Humidity45%
Visibility—
Dew point51°
Fri, 1480° / 57°0
80 °
Rockville, Friday, 14 August
Clear. High 80°, low 57°.
Pressure29.91 inHg
Wind11.3 mph SW
Humidity37%
Visibility—
Dew point49°
Sat, 1583° / 56°0
83 °
Rockville, Saturday, 15 August
Partly cloudy. High 83°, low 56°.
Pressure29.97 inHg
Wind10.9 mph SW
Humidity32%
Visibility—
Dew point47°
Sun, 1680° / 60°0
80 °
Rockville, Sunday, 16 August
Overcast. High 80°, low 60°.
Pressure30.03 inHg
Wind13.8 mph SW
Humidity38%
Visibility—
Dew point50°
Mon, 1777° / 56°0
77 °
Rockville, Monday, 17 August
Overcast. High 77°, low 56°.
Pressure30.06 inHg
Wind12.3 mph SW
Humidity38%
Visibility—
Dew point48°
Tue, 1883° / 55°0
83 °
Rockville, Tuesday, 18 August
Overcast. High 83°, low 55°.
Pressure29.97 inHg
Wind13.5 mph SW
Humidity41%
Visibility—
Dew point54°
Wed, 1984° / 62°0
84 °
Rockville, Wednesday, 19 August
Clear. High 84°, low 62°.
Pressure29.91 inHg
Wind15.3 mph SW
Humidity40%
Visibility—
Dew point55°
Thu, 2084° / 60°0
84 °
Rockville, Thursday, 20 August
Overcast. High 84°, low 60°.
Pressure29.91 inHg
Wind13.7 mph SW
Humidity39%
Visibility—
Dew point54°
Fri, 2178° / 57°0
78 °
Rockville, Friday, 21 August
Partly cloudy. High 78°, low 57°.
Pressure29.91 inHg
Wind10.3 mph SW
Humidity37%
Visibility—
Dew point47°
Sat, 2279° / 56°0
79 °
Rockville, Saturday, 22 August
Overcast. High 79°, low 56°.
Pressure29.94 inHg
Wind9.5 mph SW
Humidity34%
Visibility—
Dew point46°
Sun, 2380° / 55°0
80 °
Rockville, Sunday, 23 August
Partly cloudy. High 80°, low 55°.
Pressure29.91 inHg
Wind10.2 mph SW
Humidity34%
Visibility—
Dew point47°
Mon, 2481° / 54°0
81 °
Rockville, Monday, 24 August
Clear. High 81°, low 54°.
Pressure29.83 inHg
Wind9.9 mph SW
Humidity29%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 58°0
86 °
Rockville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high104° (1972)
Record low53° (2021)
Wed, 2687° / 58°0
87 °
Rockville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high103° (1988)
Record low53° (1970)
Thu, 2788° / 59°0
88 °
Rockville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2008)
Record low52° (2012)
Fri, 2889° / 59°0
89 °
Rockville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high89°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2008)
Record low54° (1960)
Sat, 2988° / 59°0
88 °
Rockville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high103° (1977)
Record low52° (1975)
Sun, 3087° / 59°0
87 °
Rockville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low59°
Average precipitation0 in
Chance of precipitation3%
Record high101° (2023)
Record low53° (1960)
Mon, 3188° / 58°0
88 °
Rockville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high88°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high101° (2017)
Record low52° (1970)
Tue, 0188° / 59°0
88 °
Rockville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation3%
Record high106° (2017)
Record low53° (1970)
Wed, 0288° / 59°0
88 °
Rockville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low53° (1960)
Thu, 0388° / 59°0
88 °
Rockville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high100° (1963)
Record low50° (2000)
Fri, 0488° / 58°0
88 °
Rockville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high88°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2022)
Record low50° (2000)
Sat, 0589° / 59°0
89 °
Rockville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high89°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high112° (2022)
Record low52° (1965)
Sun, 0688° / 59°0
88 °
Rockville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation2%
Record high114° (2022)
Record low51° (1973)
Mon, 0788° / 59°0
88 °
Rockville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high88°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high111° (2020)
Record low53° (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 Rockville, 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 Rockville, 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.