Monthly outlook for Imperial Beach, CA: average high 77.3°, average low 72°. That is 0.8° 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 (81°), the coolest 10 August (69.2°).
77.3°/72°
Average high / low
+0.8°
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
77.6°
76°
+0.9°
18 August – 27 August
76.8°
76.3°
+0.3°
28 August – 6 September
at normal
77.3°
—
August records over 66 years
88.3°12 August 1991All-time high
56.3°7 August 1991All-time low
Sun, 0980° / 70°0
80 °
Imperial Beach, Sunday, 9 August
Clear. High 80°, low 70°.
Pressure29.85 inHg
Wind7.9 mph W
Humidity66%
Visibility6.2 mi
Dew point65°
Mon, 1079° / 69°0
79 °
Imperial Beach, Monday, 10 August
Clear. High 79°, low 69°.
Pressure29.94 inHg
Wind8.1 mph SW
Humidity65%
Visibility6.2 mi
Dew point64°
Tue, 1179° / 74°0
79 °
Imperial Beach, Tuesday, 11 August
Clear. High 79°, low 74°.
Pressure29.97 inHg
Wind7.8 mph W
Humidity62%
Visibility6.2 mi
Dew point63°
Wed, 1277° / 73°0
77 °
Imperial Beach, Wednesday, 12 August
Clear. High 77°, low 73°.
Pressure29.91 inHg
Wind8.3 mph W
Humidity62%
Visibility6.2 mi
Dew point62°
Thu, 1374° / 71°0
74 °
Imperial Beach, Thursday, 13 August
Overcast. High 74°, low 71°.
Pressure29.94 inHg
Wind9.2 mph W
Humidity72%
Visibility—
Dew point64°
Fri, 1474° / 70°0
74 °
Imperial Beach, Friday, 14 August
Overcast. High 74°, low 70°.
Pressure29.97 inHg
Wind10.5 mph NW
Humidity70%
Visibility—
Dew point63°
Sat, 1576° / 72°0.05
76 °
Imperial Beach, Saturday, 15 August
Light rain. High 76°, low 72°.
Pressure30.00 inHg
Wind8.4 mph NW
Humidity71%
Visibility—
Dew point64°
Sun, 1677° / 73°0
77 °
Imperial Beach, Sunday, 16 August
Overcast. High 77°, low 73°.
Pressure30.06 inHg
Wind11.1 mph NW
Humidity69%
Visibility—
Dew point65°
Mon, 1778° / 73°0
78 °
Imperial Beach, Monday, 17 August
Overcast. High 78°, low 73°.
Pressure30.06 inHg
Wind14.2 mph NW
Humidity60%
Visibility—
Dew point62°
Tue, 1876° / 73°0
76 °
Imperial Beach, Tuesday, 18 August
Partly cloudy. High 76°, low 73°.
Pressure29.97 inHg
Wind11.3 mph NW
Humidity64%
Visibility—
Dew point62°
Wed, 1975° / 72°0
75 °
Imperial Beach, Wednesday, 19 August
Overcast. High 75°, low 72°.
Pressure29.94 inHg
Wind10.2 mph SW
Humidity71%
Visibility—
Dew point64°
Thu, 2076° / 71°0
76 °
Imperial Beach, Thursday, 20 August
Overcast. High 76°, low 71°.
Pressure29.94 inHg
Wind9.1 mph W
Humidity71%
Visibility—
Dew point64°
Fri, 2177° / 72°0
77 °
Imperial Beach, Friday, 21 August
Clear. High 77°, low 72°.
Pressure29.91 inHg
Wind9 mph W
Humidity69%
Visibility—
Dew point65°
Sat, 2279° / 74°0
79 °
Imperial Beach, Saturday, 22 August
Clear. High 79°, low 74°.
Pressure29.94 inHg
Wind10 mph NW
Humidity63%
Visibility—
Dew point63°
Sun, 2377° / 73°0
77 °
Imperial Beach, Sunday, 23 August
Clear. High 77°, low 73°.
Pressure29.94 inHg
Wind11 mph NW
Humidity63%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 65°0
76 °
Imperial Beach, Monday, 24 August
Climate normal for this date — 60-year average.
Average high76°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high83° (1985)
Record low58° (1987)
Tue, 2577° / 65°0
77 °
Imperial Beach, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0 in
Chance of precipitation2%
Record high86° (1985)
Record low58° (1987)
Wed, 2677° / 65°0
77 °
Imperial Beach, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0 in
Chance of precipitation5%
Record high87° (1981)
Record low58° (1987)
Thu, 2778° / 66°0
78 °
Imperial Beach, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high88° (2009)
Record low59° (1960)
Fri, 2878° / 65°0.01
78 °
Imperial Beach, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low65°
Average precipitation0.01 in
Chance of precipitation2%
Record high88° (2015)
Record low57° (1973)
Sat, 2978° / 65°0
78 °
Imperial Beach, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high86° (1998)
Record low58° (2002)
Sun, 3077° / 65°0
77 °
Imperial Beach, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high88° (1967)
Record low60° (1974)
Mon, 3177° / 65°0
77 °
Imperial Beach, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high87° (2017)
Record low58° (2010)
Tue, 0177° / 65°0.01
77 °
Imperial Beach, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0.01 in
Chance of precipitation2%
Record high88° (1967)
Record low58° (1973)
Wed, 0277° / 65°0.01
77 °
Imperial Beach, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0.01 in
Chance of precipitation3%
Record high85° (2017)
Record low58° (1973)
Thu, 0377° / 65°0.01
77 °
Imperial Beach, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0.01 in
Chance of precipitation5%
Record high99° (1988)
Record low59° (1973)
Fri, 0478° / 66°0
78 °
Imperial Beach, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high101° (1988)
Record low59° (1999)
Sat, 0578° / 65°0
78 °
Imperial Beach, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low65°
Average precipitation0 in
Chance of precipitation2%
Record high96° (1988)
Record low58° (1999)
Sun, 0678° / 66°0
78 °
Imperial Beach, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0 in
Chance of precipitation5%
Record high92° (2020)
Record low56° (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 Imperial Beach, 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 Imperial Beach, 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.