Aliso Viejo, California climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Aliso Viejo's center at January lows of 48°F and July highs of 79°F, a yearly mean of 63.6°F and 12.8 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Laguna Beach (4 miles SW, 44 ft), has January lows of 44°F and July highs of 80°F.
50,457 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 68° 48°
- Feb 67° 48°
- Mar 68° 50°
- Apr 70° 52°
- May 71° 55°
- Jun 74° 59°
- Jul 79° 62°
- Aug 81° 63°
- Sep 80° 62°
- Oct 77° 58°
- Nov 72° 52°
- Dec 67° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Aliso Viejo's center.
What is each month like in Aliso Viejo?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Laguna Beach high | Laguna Beach low |
|---|---|---|---|---|---|---|
| January | 68°F | 48°F | 57.7°F | 2.93 | 68°F | 44°F |
| February | 67°F | 48°F | 57.2°F | 3.18 | 68°F | 45°F |
| March | 68°F | 50°F | 58.6°F | 1.85 | 69°F | 48°F |
| April | 70°F | 52°F | 60.8°F | 0.79 | 73°F | 50°F |
| May | 71°F | 55°F | 63.3°F | 0.31 | 75°F | 55°F |
| June | 74°F | 59°F | 66.5°F | 0.07 | 76°F | 58°F |
| July | 79°F | 62°F | 70.3°F | 0.03 | 80°F | 60°F |
| August | 81°F | 63°F | 72.0°F | 0.00 | 81°F | 61°F |
| September | 80°F | 62°F | 71.1°F | 0.10 | 81°F | 59°F |
| October | 77°F | 58°F | 67.2°F | 0.55 | 77°F | 55°F |
| November | 72°F | 52°F | 61.8°F | 0.85 | 72°F | 49°F |
| December | 67°F | 47°F | 57.1°F | 2.18 | 67°F | 44°F |
In metric: a yearly mean of 17.6°C, January lows of 9°C, July highs of 26°C and 326 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Aliso Viejo say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Laguna Beach | 4 mi SW | 44 ft | 63.1°F | 44°F | 80°F | 12.7 | 0 | January 6 |
| TustinTustin Irvine Ranch | 9 mi N | 235 ft | 64.8°F | 43°F | 85°F | 14.1 | 0 | January 5 |
| Newport BeachNewport Beach Harbor | 9 mi W | 10 ft | 62.8°F | 50°F | 72°F | 9.4 | 0 | – |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Aliso Viejo?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Laguna Beach (4 miles SW, 44 ft). It gets 0 inches of snow in a normal year. The last spring frost (32°F) comes after January 6 in half of years and the first autumn frost before January 2. Its record high is 104°F (1939) and its record low 21°F (1949) (kept since 1928).
The USDA's 2023 Plant Hardiness Zone Map puts Aliso Viejo in zone 10b (ZIP code 92656).
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (5.4 kWh per square metre a day, NASA POWER 2001-2020); August is the sunniest month (92%) and February the cloudiest (83%).
Laguna Beach's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Aliso Viejo; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00044647; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Aliso Viejo, ZIP code by ZIP code?
One ZIP code area lies wholly or partly in Aliso Viejo. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 92656 | 10b | 63.6°F | 48°F | 79°F | 12.8 | Laguna Beach (4 mi) | January 6 | January 2 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.