Monthly outlook for Roseville, CA: average high 102.8°, average low 71.7°. That is 6.3° 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 23 August (117.5°), the coolest 14 August (62.9°).
102.8°/71.7°
Average high / low
+6.3°
Above 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
96.7°
92.4°
+2.4°
19 August – 28 August
113.2°
90.6°
+12.6°
29 August – 7 September
at normal
91.2°
—
August records over 66 years
110.7°17 August 2020All-time high
51.6°16 August 1976All-time low
Mon, 10101° / 71°0
101 °
Roseville, Monday, 10 August
Clear. High 101°, low 71°.
Pressure29.83 inHg
Wind5.5 mph SW
Humidity15%
Visibility6.2 mi
Dew point41°
Tue, 11102° / 68°0
102 °
Roseville, Tuesday, 11 August
Clear. High 102°, low 68°.
Pressure29.88 inHg
Wind6.2 mph SW
Humidity19%
Visibility6.2 mi
Dew point43°
Wed, 1297° / 68°0
97 °
Roseville, Wednesday, 12 August
Clear. High 97°, low 68°.
Pressure29.80 inHg
Wind6.5 mph S
Humidity20%
Visibility6.2 mi
Dew point44°
Thu, 1388° / 64°0.02
88 °
Roseville, Thursday, 13 August
Light rain. High 88°, low 64°.
Pressure29.80 inHg
Wind10.7 mph S
Humidity29%
Visibility—
Dew point47°
Fri, 1492° / 63°0
92 °
Roseville, Friday, 14 August
Clear. High 92°, low 63°.
Pressure29.85 inHg
Wind8.7 mph S
Humidity27%
Visibility—
Dew point47°
Sat, 1593° / 63°0
93 °
Roseville, Saturday, 15 August
Clear. High 93°, low 63°.
Pressure29.91 inHg
Wind9 mph SW
Humidity23%
Visibility—
Dew point45°
Sun, 1684° / 67°0
84 °
Roseville, Sunday, 16 August
Overcast. High 84°, low 67°.
Pressure30.09 inHg
Wind8.2 mph S
Humidity39%
Visibility—
Dew point49°
Mon, 1799° / 68°0
99 °
Roseville, Monday, 17 August
Partly cloudy. High 99°, low 68°.
Pressure30.00 inHg
Wind7.6 mph SW
Humidity19%
Visibility—
Dew point45°
Tue, 18106° / 72°0
106 °
Roseville, Tuesday, 18 August
Clear. High 106°, low 72°.
Pressure29.91 inHg
Wind9 mph SW
Humidity14%
Visibility—
Dew point42°
Wed, 19107° / 74°0
107 °
Roseville, Wednesday, 19 August
Partly cloudy. High 107°, low 74°.
Pressure29.85 inHg
Wind8.5 mph SE
Humidity13%
Visibility—
Dew point41°
Thu, 20110° / 76°0
110 °
Roseville, Thursday, 20 August
Overcast. High 110°, low 76°.
Pressure29.80 inHg
Wind9.1 mph S
Humidity14%
Visibility—
Dew point45°
Fri, 21113° / 78°0
113 °
Roseville, Friday, 21 August
Clear. High 113°, low 78°.
Pressure29.74 inHg
Wind8.3 mph S
Humidity12%
Visibility—
Dew point42°
Sat, 22115° / 81°0
115 °
Roseville, Saturday, 22 August
Clear. High 115°, low 81°.
Pressure29.80 inHg
Wind7.2 mph SW
Humidity10%
Visibility—
Dew point40°
Sun, 23117° / 83°0
117 °
Roseville, Sunday, 23 August
Partly cloudy. High 117°, low 83°.
Pressure29.80 inHg
Wind7.7 mph W
Humidity8%
Visibility—
Dew point37°
Mon, 24116° / 83°0
116 °
Roseville, Monday, 24 August
Clear. High 116°, low 83°.
Pressure29.80 inHg
Wind9.9 mph SW
Humidity9%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2590° / 61°0
90 °
Roseville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high90°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2010)
Record low53° (2024)
Wed, 2691° / 61°0
91 °
Roseville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high91°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high104° (2017)
Record low55° (1966)
Thu, 2792° / 62°0
92 °
Roseville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2017)
Record low55° (1991)
Fri, 2892° / 62°0
92 °
Roseville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high107° (2017)
Record low55° (1960)
Sat, 2992° / 62°0
92 °
Roseville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2021)
Record low54° (1980)
Sun, 3091° / 62°0
91 °
Roseville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high103° (1976)
Record low54° (1966)
Mon, 3191° / 61°0
91 °
Roseville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high91°
Average low61°
Average precipitation0 in
Chance of precipitation2%
Record high103° (1976)
Record low55° (1966)
Tue, 0192° / 62°0.01
92 °
Roseville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high92°
Average low62°
Average precipitation0.01 in
Chance of precipitation3%
Record high109° (2017)
Record low53° (1999)
Wed, 0291° / 62°0.03
91 °
Roseville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0.03 in
Chance of precipitation7%
Record high107° (2017)
Record low51° (1964)
Thu, 0391° / 62°0
91 °
Roseville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high106° (2017)
Record low52° (2000)
Fri, 0491° / 62°0
91 °
Roseville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high108° (2022)
Record low52° (1965)
Sat, 0591° / 62°0.01
91 °
Roseville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0.01 in
Chance of precipitation3%
Record high116° (2022)
Record low52° (2000)
Sun, 0691° / 62°0
91 °
Roseville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation2%
Record high118° (2022)
Record low53° (1973)
Mon, 0791° / 62°0
91 °
Roseville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high91°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high114° (2020)
Record low53° (2002)
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 Roseville, 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 Roseville, 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.