Mission Viejo, CA All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Mission Viejo, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 107°F (42°C) | September 26, 1963 |
| Record Low | 28.9°F (-2°C) | January 22, 1937 |
| Lowest High | 48°F (9°C) | February 16, 1932 and December 12, 1932 and January 11, 1949 |
| Highest Low | 78°F (26°C) | September 3, 1998 |
| Highest Mean | 89°F (32°C) | September 26, 1963 |
| Lowest Mean | 40.4°F (5°C) | January 22, 1937 |
| Precipitation | ||
| Max in One Calendar Day | 6.00" (152.4 mm) | December 6, 1997 |
| Max in One Month | 11.24" (285.6 mm) | February 1998 |
| Least in One Month | 0.00" (0.0 mm) | June 1921 |
| Max in One Year | 27.90" (708.6 mm) | 1978 |
| Least in One Year | 1.39" (35.4 mm) | 2007 |
| Period of Record | ||
| Temperature | January 1, 1921 – June 30, 2026 | |
| Precipitation | January 1, 1921 – June 30, 2026 | |
| Snowfall | May 1, 1935 – December 31, 2010 | |
Note: Records compiled from NOAA GHCN-Daily observations at NEWPORT BEACH HARBOR (13 mi from Mission Viejo, CA). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Mission Viejo, CA?
The all-time record high in Mission Viejo, CA is 107°F (42°C), set on September 26, 1963.
What is the coldest temperature ever recorded in Mission Viejo, CA?
The all-time record low in Mission Viejo, CA is 28.9°F (-2°C), set on January 22, 1937.
What is the most rain Mission Viejo, CA has ever had in one day?
The most precipitation recorded in one calendar day near Mission Viejo, CA is 6.00 inches, on December 6, 1997.
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Mission Viejo Weather History
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