Monthly outlook for Delta, CA: average high 81.6°, average low 71.6°. That is 0.2° below 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 9 August (94.7°), the coolest 13 August (69.3°).
81.6°/71.6°
Average high / low
−0.2°
Below normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
81.9°
82.2°
-0.1°
18 August – 27 August
81.1°
82.3°
-0.6°
28 August – 6 September
at normal
83.8°
—
August records over 66 years
102.7°30 August 1967All-time high
55.4°11 August 2010All-time low
Climate normals and records are computed from the nearest reference point — Lawndale (3 mi).
Sun, 0995° / 70°0
95 °
Delta, Sunday, 9 August
Clear. High 95°, low 70°.
Pressure29.85 inHg
Wind8.2 mph SW
Humidity54%
Visibility6.2 mi
Dew point61°
Mon, 1083° / 72°0
83 °
Delta, Monday, 10 August
Partly cloudy. High 83°, low 72°.
Pressure29.91 inHg
Wind7 mph SW
Humidity51%
Visibility6.2 mi
Dew point60°
Tue, 1180° / 72°0
80 °
Delta, Tuesday, 11 August
Clear. High 80°, low 72°.
Pressure29.97 inHg
Wind8.3 mph SW
Humidity51%
Visibility6.2 mi
Dew point59°
Wed, 1279° / 71°0
79 °
Delta, Wednesday, 12 August
Partly cloudy. High 79°, low 71°.
Pressure29.88 inHg
Wind7.2 mph SW
Humidity55%
Visibility6.2 mi
Dew point60°
Thu, 1377° / 69°0
77 °
Delta, Thursday, 13 August
Overcast. High 77°, low 69°.
Pressure29.91 inHg
Wind11.3 mph SW
Humidity62%
Visibility—
Dew point60°
Fri, 1478° / 70°0
78 °
Delta, Friday, 14 August
Overcast. High 78°, low 70°.
Pressure29.97 inHg
Wind10.9 mph W
Humidity61%
Visibility—
Dew point60°
Sat, 1578° / 69°0
78 °
Delta, Saturday, 15 August
Mostly clear. High 78°, low 69°.
Pressure30.00 inHg
Wind11.8 mph SW
Humidity58%
Visibility—
Dew point60°
Sun, 1680° / 73°0
80 °
Delta, Sunday, 16 August
Partly cloudy. High 80°, low 73°.
Pressure30.00 inHg
Wind12.3 mph SW
Humidity52%
Visibility—
Dew point59°
Mon, 1781° / 72°0
81 °
Delta, Monday, 17 August
Partly cloudy. High 81°, low 72°.
Pressure30.03 inHg
Wind13.4 mph SW
Humidity49%
Visibility—
Dew point58°
Tue, 1881° / 73°0
81 °
Delta, Tuesday, 18 August
Clear. High 81°, low 73°.
Pressure29.97 inHg
Wind11.2 mph SW
Humidity50%
Visibility—
Dew point59°
Wed, 1984° / 73°0
84 °
Delta, Wednesday, 19 August
Mostly clear. High 84°, low 73°.
Pressure29.88 inHg
Wind8.1 mph S
Humidity51%
Visibility—
Dew point61°
Thu, 2082° / 74°0
82 °
Delta, Thursday, 20 August
Mostly clear. High 82°, low 74°.
Pressure29.88 inHg
Wind9.4 mph S
Humidity61%
Visibility—
Dew point64°
Fri, 2181° / 73°0
81 °
Delta, Friday, 21 August
Mostly clear. High 81°, low 73°.
Pressure29.88 inHg
Wind9.4 mph SW
Humidity60%
Visibility—
Dew point63°
Sat, 2280° / 73°0
80 °
Delta, Saturday, 22 August
Overcast. High 80°, low 73°.
Pressure29.88 inHg
Wind8.9 mph SW
Humidity64%
Visibility—
Dew point64°
Sun, 2378° / 72°0
78 °
Delta, Sunday, 23 August
Clear. High 78°, low 72°.
Pressure29.88 inHg
Wind11.3 mph SW
Humidity65%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2483° / 64°0
83 °
Delta, Monday, 24 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0 in
Chance of precipitation0%
Record high95° (1985)
Record low58° (1978)
Tue, 2583° / 64°0
83 °
Delta, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0 in
Chance of precipitation0%
Record high98° (1985)
Record low58° (1978)
Wed, 2683° / 64°0
83 °
Delta, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0 in
Chance of precipitation0%
Record high99° (1981)
Record low58° (1990)
Thu, 2784° / 64°0
84 °
Delta, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low64°
Average precipitation0 in
Chance of precipitation0%
Record high97° (1981)
Record low56° (1973)
Fri, 2884° / 64°0
84 °
Delta, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low64°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1981)
Record low57° (1991)
Sat, 2985° / 65°0
85 °
Delta, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high100° (1967)
Record low57° (2002)
Sun, 3084° / 65°0
84 °
Delta, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high103° (1967)
Record low57° (2010)
Mon, 3183° / 64°0
83 °
Delta, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0 in
Chance of precipitation2%
Record high96° (1998)
Record low58° (1973)
Tue, 0183° / 64°0.01
83 °
Delta, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low64°
Average precipitation0.01 in
Chance of precipitation2%
Record high101° (1998)
Record low56° (1973)
Wed, 0284° / 65°0.01
84 °
Delta, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.01 in
Chance of precipitation3%
Record high100° (1982)
Record low55° (1964)
Thu, 0384° / 65°0
84 °
Delta, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0 in
Chance of precipitation5%
Record high102° (1988)
Record low58° (1999)
Fri, 0484° / 65°0
84 °
Delta, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high108° (1988)
Record low58° (1970)
Sat, 0584° / 65°0.02
84 °
Delta, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.02 in
Chance of precipitation3%
Record high103° (1984)
Record low58° (1973)
Sun, 0684° / 65°0.01
84 °
Delta, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low65°
Average precipitation0.01 in
Chance of precipitation2%
Record high98° (2020)
Record low56° (1970)
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 Delta, 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 Delta, 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.