Monthly outlook for Bostonia, CA: average high 88°, average low 71.1°. That is 1.6° 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 8 August (96.3°), the coolest 10 August (68.6°).
88°/71.1°
Average high / low
+1.6°
Above normal
1 / 0
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
87.5°
85.4°
+1.2°
18 August – 27 August
89°
85.4°
+2°
28 August – 6 September
at normal
87.1°
—
August records over 66 years
103.1°31 August 2017All-time high
52.3°22 August 1968All-time low
Sun, 0990° / 69°0
90 °
Bostonia, Sunday, 9 August
Clear. High 90°, low 69°.
Pressure29.83 inHg
Wind9.6 mph W
Humidity33%
Visibility6.2 mi
Dew point59°
Mon, 1089° / 69°0
89 °
Bostonia, Monday, 10 August
Partly cloudy. High 89°, low 69°.
Pressure29.91 inHg
Wind10 mph SW
Humidity39%
Visibility6.2 mi
Dew point60°
Tue, 1190° / 74°0.01
90 °
Bostonia, Tuesday, 11 August
Light rain. High 90°, low 74°.
Pressure29.94 inHg
Wind8.3 mph W
Humidity35%
Visibility6.2 mi
Dew point56°
Wed, 1288° / 73°0
88 °
Bostonia, Wednesday, 12 August
Clear. High 88°, low 73°.
Pressure29.88 inHg
Wind8.5 mph W
Humidity34%
Visibility6.2 mi
Dew point55°
Thu, 1384° / 71°0
84 °
Bostonia, Thursday, 13 August
Overcast. High 84°, low 71°.
Pressure29.91 inHg
Wind9.8 mph W
Humidity52%
Visibility—
Dew point59°
Fri, 1486° / 69°0
86 °
Bostonia, Friday, 14 August
Overcast. High 86°, low 69°.
Pressure29.97 inHg
Wind11.8 mph W
Humidity52%
Visibility—
Dew point58°
Sat, 1578° / 72°0.05
78 °
Bostonia, Saturday, 15 August
Light rain. High 78°, low 72°.
Pressure30.00 inHg
Wind3.2 mph NE
Humidity56%
Visibility—
Dew point59°
Sun, 1686° / 72°0
86 °
Bostonia, Sunday, 16 August
Overcast. High 86°, low 72°.
Pressure30.06 inHg
Wind10.8 mph W
Humidity54%
Visibility—
Dew point62°
Mon, 1789° / 71°0
89 °
Bostonia, Monday, 17 August
Overcast. High 89°, low 71°.
Pressure30.06 inHg
Wind12.8 mph W
Humidity40%
Visibility—
Dew point55°
Tue, 1889° / 71°0
89 °
Bostonia, Tuesday, 18 August
Mostly clear. High 89°, low 71°.
Pressure29.94 inHg
Wind10.8 mph W
Humidity39%
Visibility—
Dew point55°
Wed, 1987° / 70°0
87 °
Bostonia, Wednesday, 19 August
Overcast. High 87°, low 70°.
Pressure29.91 inHg
Wind10.4 mph SW
Humidity45%
Visibility—
Dew point57°
Thu, 2087° / 71°0
87 °
Bostonia, Thursday, 20 August
Overcast. High 87°, low 71°.
Pressure29.94 inHg
Wind10.6 mph W
Humidity45%
Visibility—
Dew point58°
Fri, 2189° / 71°0
89 °
Bostonia, Friday, 21 August
Clear. High 89°, low 71°.
Pressure29.91 inHg
Wind10.2 mph W
Humidity41%
Visibility—
Dew point57°
Sat, 2292° / 73°0
92 °
Bostonia, Saturday, 22 August
Clear. High 92°, low 73°.
Pressure29.91 inHg
Wind10.8 mph W
Humidity33%
Visibility—
Dew point53°
Sun, 2390° / 72°0
90 °
Bostonia, Sunday, 23 August
Clear. High 90°, low 72°.
Pressure29.91 inHg
Wind11.1 mph W
Humidity34%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 66°0
86 °
Bostonia, Monday, 24 August
Climate normal for this date — 60-year average.
Average high86°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high97° (1985)
Record low59° (1973)
Tue, 2586° / 67°0.01
86 °
Bostonia, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low67°
Average precipitation0.01 in
Chance of precipitation7%
Record high101° (1985)
Record low58° (1989)
Wed, 2687° / 67°0
87 °
Bostonia, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high98° (1981)
Record low58° (1973)
Thu, 2788° / 67°0
88 °
Bostonia, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high101° (2009)
Record low57° (1973)
Fri, 2888° / 67°0.01
88 °
Bostonia, Friday, 28 August
Climate normal for this date — 60-year average.
Average high88°
Average low67°
Average precipitation0.01 in
Chance of precipitation2%
Record high100° (2023)
Record low56° (1973)
Sat, 2988° / 68°0
88 °
Bostonia, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low68°
Average precipitation0 in
Chance of precipitation3%
Record high101° (1998)
Record low58° (2010)
Sun, 3087° / 68°0
87 °
Bostonia, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high87°
Average low68°
Average precipitation0 in
Chance of precipitation3%
Record high100° (1967)
Record low58° (2010)
Mon, 3186° / 67°0
86 °
Bostonia, Monday, 31 August
Climate normal for this date — 60-year average.
Average high86°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2017)
Record low58° (1964)
Tue, 0186° / 66°0
86 °
Bostonia, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high86°
Average low66°
Average precipitation0 in
Chance of precipitation3%
Record high101° (2002)
Record low58° (1964)
Wed, 0287° / 67°0.01
87 °
Bostonia, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high87°
Average low67°
Average precipitation0.01 in
Chance of precipitation3%
Record high99° (2007)
Record low55° (1964)
Thu, 0387° / 67°0
87 °
Bostonia, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high87°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high104° (1988)
Record low57° (1999)
Fri, 0487° / 67°0
87 °
Bostonia, Friday, 4 September
Climate normal for this date — 60-year average.
Average high87°
Average low67°
Average precipitation0 in
Chance of precipitation3%
Record high102° (1988)
Record low57° (1999)
Sat, 0588° / 67°0
88 °
Bostonia, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high88°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high109° (2020)
Record low58° (1970)
Sun, 0687° / 67°0
87 °
Bostonia, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high87°
Average low67°
Average precipitation0 in
Chance of precipitation7%
Record high105° (2020)
Record low57° (1973)
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 Bostonia, 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 Bostonia, 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.