As of 10:43 PDT

Weather in Old Town San Diego, CA

82°Current weather

Old Town San Diego, Sunday, 9 August, 10:43

Clear. Feels like 86°. High 86°, low 71°.

Pressure29.85 inHg
Wind4 mph N
Humidity69%
Visibility6.2 mi
Dew point71°

Monthly outlook for Old Town San Diego, CA: average high 79.4°, average low 72.7°. That is 0.1° below 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 10 August (86.6°), the coolest 10 August (69°).

79.4°/72.7°
Average high / low
−0.1°
Below normal
1 / 0
Wet days / normal
0.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August78.6°79.6°-0.5°
19 August – 28 August80.6°80.1°+0.3°
29 August – 7 Septemberat normal81.2°

August records over 66 years

99.1°31 August 2017All-time high
55.8°9 August 2010All-time low

Climate normals and records are computed from the nearest reference point — San Diego (7 mi).

Mon, 1087° / 69°0Mostly clear
87 °Mostly clear

Old Town San Diego, Monday, 10 August

Mostly clear. High 87°, low 69°.

Pressure29.91 inHg
Wind8.6 mph SW
Humidity66%
Visibility6.2 mi
Dew point64°
Tue, 1178° / 73°0.01Light rain
78 °Light rain

Old Town San Diego, Tuesday, 11 August

Light rain. High 78°, low 73°.

Pressure29.97 inHg
Wind8.7 mph W
Humidity61%
Visibility6.2 mi
Dew point63°
Wed, 1277° / 72°0Clear
77 °Clear

Old Town San Diego, Wednesday, 12 August

Clear. High 77°, low 72°.

Pressure29.91 inHg
Wind9.6 mph W
Humidity62%
Visibility6.2 mi
Dew point63°
Thu, 1374° / 70°0Overcast
74 °Overcast

Old Town San Diego, Thursday, 13 August

Overcast. High 74°, low 70°.

Pressure29.91 inHg
Wind9.7 mph W
Humidity70%
Visibility
Dew point62°
Fri, 1473° / 69°0Overcast
73 °Overcast

Old Town San Diego, Friday, 14 August

Overcast. High 73°, low 69°.

Pressure29.94 inHg
Wind9.3 mph W
Humidity68%
Visibility
Dew point62°
Sat, 1576° / 71°0Overcast
76 °Overcast

Old Town San Diego, Saturday, 15 August

Overcast. High 76°, low 71°.

Pressure30.03 inHg
Wind11.7 mph W
Humidity67%
Visibility
Dew point62°
Sun, 1678° / 73°0Overcast
78 °Overcast

Old Town San Diego, Sunday, 16 August

Overcast. High 78°, low 73°.

Pressure30.06 inHg
Wind11.7 mph W
Humidity62%
Visibility
Dew point62°
Mon, 1778° / 73°0Partly cloudy
78 °Partly cloudy

Old Town San Diego, Monday, 17 August

Partly cloudy. High 78°, low 73°.

Pressure30.03 inHg
Wind13.1 mph NW
Humidity62%
Visibility
Dew point63°
Tue, 1879° / 73°0.02Light rain
79 °Light rain

Old Town San Diego, Tuesday, 18 August

Light rain. High 79°, low 73°.

Pressure29.94 inHg
Wind10.8 mph W
Humidity63%
Visibility
Dew point64°
Wed, 1980° / 74°0Clear
80 °Clear

Old Town San Diego, Wednesday, 19 August

Clear. High 80°, low 74°.

Pressure29.88 inHg
Wind11.4 mph S
Humidity61%
Visibility
Dew point65°
Thu, 2082° / 74°0.06Light rain
82 °Light rain

Old Town San Diego, Thursday, 20 August

Light rain. High 82°, low 74°.

Pressure29.88 inHg
Wind8.3 mph SW
Humidity70%
Visibility
Dew point67°
Fri, 2181° / 76°0Partly cloudy
81 °Partly cloudy

Old Town San Diego, Friday, 21 August

Partly cloudy. High 81°, low 76°.

Pressure29.85 inHg
Wind8.3 mph W
Humidity58%
Visibility
Dew point65°
Sat, 2280° / 75°0Overcast
80 °Overcast

Old Town San Diego, Saturday, 22 August

Overcast. High 80°, low 75°.

Pressure29.88 inHg
Wind8.3 mph SW
Humidity62%
Visibility
Dew point65°
Sun, 2379° / 74°0Clear
79 °Clear

Old Town San Diego, Sunday, 23 August

Clear. High 79°, low 74°.

Pressure29.91 inHg
Wind9.7 mph W
Humidity64%
Visibility
Dew point66°
Mon, 2481° / 75°0Clear
81 °Clear

Old Town San Diego, Monday, 24 August

Clear. High 81°, low 75°.

Pressure29.88 inHg
Wind9.2 mph S
Humidity64%
Visibility
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 65°0.01Climate normal
80 °Climate normal

Old Town San Diego, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.01 in
Chance of precipitation7%
Record high91° (1985)
Record low57° (1987)
Wed, 2681° / 65°0Climate normal
81 °Climate normal

Old Town San Diego, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high93° (2021)
Record low58° (1987)
Thu, 2782° / 65°0Climate normal
82 °Climate normal

Old Town San Diego, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high94° (2020)
Record low58° (1989)
Fri, 2882° / 65°0Climate normal
82 °Climate normal

Old Town San Diego, Friday, 28 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation2%
Record high93° (2023)
Record low57° (1973)
Sat, 2982° / 65°0Climate normal
82 °Climate normal

Old Town San Diego, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high96° (2023)
Record low58° (2010)
Sun, 3081° / 65°0Climate normal
81 °Climate normal

Old Town San Diego, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high93° (2017)
Record low58° (1964)
Mon, 3181° / 65°0Climate normal
81 °Climate normal

Old Town San Diego, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high99° (2017)
Record low58° (2010)
Tue, 0180° / 65°0.01Climate normal
80 °Climate normal

Old Town San Diego, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high80°
Average low65°
Average precipitation0.01 in
Chance of precipitation3%
Record high98° (2017)
Record low58° (1964)
Wed, 0281° / 65°0Climate normal
81 °Climate normal

Old Town San Diego, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high94° (2017)
Record low59° (1973)
Thu, 0381° / 65°0Climate normal
81 °Climate normal

Old Town San Diego, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high103° (1988)
Record low57° (1973)
Fri, 0482° / 65°0Climate normal
82 °Climate normal

Old Town San Diego, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation3%
Record high102° (1988)
Record low58° (1999)
Sat, 0582° / 65°0Climate normal
82 °Climate normal

Old Town San Diego, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2020)
Record low58° (1970)
Sun, 0682° / 65°0Climate normal
82 °Climate normal

Old Town San Diego, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0 in
Chance of precipitation7%
Record high103° (2020)
Record low57° (1973)
Mon, 0781° / 65°0.01Climate normal
81 °Climate normal

Old Town San Diego, Monday, 7 September

Climate normal for this date — 60-year average.

Average high81°
Average low65°
Average precipitation0.01 in
Chance of precipitation3%
Record high98° (2024)
Record low57° (1964)

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 Old Town San Diego, 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 Old Town San Diego, 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.