Climate Costa Mesa - California
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 67 | 66 | 67 | 69 | 72 | 74 |
| Average low in ºF Av. low Lo | 47 | 49 | 51 | 54 | 58 | 61 |
| Av. precipitation in inch Av. precip. Pre. | 2.91 | 2.95 | 1.90 | 0.89 | 0.23 | 0.08 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 78 | 80 | 79 | 75 | 71 | 66 |
| Average low in ºF Av. low Lo | 64 | 65 | 64 | 59 | 52 | 46 |
| Av. precipitation in inch Av. precip. Pre. | 0.04 | 0.03 | 0.22 | 0.75 | 1.25 | 2.08 |
What is the average weather in Costa Mesa, California?
Costa Mesa experiences a cold semi-arid climate, characterized by dry summers and wetter winters. Summers are warm, while winters remain mild. Precipitation is generally low throughout the year, often arriving in brief showers, contributing to the overall dry conditions.
Costa Mesa Climate Graph - California Climate Chart
Daily normals Costa Mesa - California - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 66.4 | 47.8 | 0.09 | 0.09 | 0.00 | 0.00 |
| 2 Jan | 66.5 | 47.8 | 0.19 | 0.19 | 0.00 | 0.00 |
| 3 Jan | 66.5 | 47.9 | 0.28 | 0.28 | 0.00 | 0.00 |
| 4 Jan | 66.6 | 47.9 | 0.37 | 0.37 | 0.00 | 0.00 |
| 5 Jan | 66.7 | 48.0 | 0.45 | 0.45 | 0.00 | 0.00 |
| 6 Jan | 66.7 | 48.0 | 0.54 | 0.54 | 0.00 | 0.00 |
| 7 Jan | 66.8 | 48.1 | 0.62 | 0.62 | 0.00 | 0.00 |
| 8 Jan | 66.9 | 48.2 | 0.71 | 0.71 | 0.00 | 0.00 |
| 9 Jan | 66.9 | 48.2 | 0.80 | 0.80 | 0.00 | 0.00 |
| 10 Jan | 67.0 | 48.3 | 0.89 | 0.89 | 0.00 | 0.00 |
| 11 Jan | 67.0 | 48.3 | 0.98 | 0.98 | 0.00 | 0.00 |
| 12 Jan | 67.1 | 48.4 | 1.07 | 1.07 | 0.00 | 0.00 |
| 13 Jan | 67.1 | 48.5 | 1.16 | 1.16 | 0.00 | 0.00 |
| 14 Jan | 67.1 | 48.5 | 1.24 | 1.24 | 0.00 | 0.00 |
| 15 Jan | 67.2 | 48.6 | 1.33 | 1.33 | 0.00 | 0.00 |
| 16 Jan | 67.2 | 48.6 | 1.41 | 1.41 | 0.00 | 0.00 |
| 17 Jan | 67.2 | 48.7 | 1.49 | 1.49 | 0.00 | 0.00 |
| 18 Jan | 67.2 | 48.7 | 1.57 | 1.57 | 0.00 | 0.00 |
| 19 Jan | 67.2 | 48.8 | 1.66 | 1.66 | 0.00 | 0.00 |
| 20 Jan | 67.2 | 48.9 | 1.74 | 1.74 | 0.00 | 0.00 |
| 21 Jan | 67.2 | 48.9 | 1.82 | 1.82 | 0.00 | 0.00 |
| 22 Jan | 67.2 | 48.9 | 1.90 | 1.90 | 0.00 | 0.00 |
| 23 Jan | 67.2 | 49.0 | 1.98 | 1.98 | 0.00 | 0.00 |
| 24 Jan | 67.2 | 49.0 | 2.06 | 2.06 | 0.00 | 0.00 |
| 25 Jan | 67.2 | 49.1 | 2.13 | 2.13 | 0.00 | 0.00 |
| 26 Jan | 67.2 | 49.1 | 2.21 | 2.21 | 0.00 | 0.00 |
| 27 Jan | 67.1 | 49.2 | 2.27 | 2.27 | 0.00 | 0.00 |
| 28 Jan | 67.1 | 49.2 | 2.35 | 2.35 | 0.00 | 0.00 |
| 29 Jan | 67.1 | 49.2 | 2.42 | 2.42 | 0.00 | 0.00 |
| 30 Jan | 67.0 | 49.3 | 2.51 | 2.51 | 0.00 | 0.00 |
| 31 Jan | 67.0 | 49.3 | 2.59 | 2.59 | 0.00 | 0.00 |
Weather history Costa Mesa - September 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Sep | 79.0 | 68.0 | 0.00 | - | - |
| 02 Sep | 79.0 | 64.9 | 0.00 | - | - |
| 03 Sep | 78.1 | 66.0 | 0.00 | - | - |
| 04 Sep | 78.1 | 64.9 | 0.00 | - | - |
| 05 Sep | 84.9 | 64.9 | 0.00 | - | - |
| 06 Sep | 79.0 | 69.1 | 0.31 | - | - |
| 07 Sep | 91.9 | 75.0 | T | - | - |
| 08 Sep | 99.0 | 75.0 | T | - | - |
| 09 Sep | 102.0 | 78.1 | 0.00 | - | - |
| 10 Sep | 89.1 | 77.0 | 0.00 | - | - |
| 11 Sep | 82.9 | 73.9 | T | - | - |
| 12 Sep | - | - | - | - | - |
| 13 Sep | - | - | - | - | - |
| 14 Sep | - | - | - | - | - |
| 15 Sep | - | - | - | - | - |
| 16 Sep | - | - | - | - | - |
| 17 Sep | - | - | - | - | - |
| 18 Sep | - | - | - | - | - |
| 19 Sep | - | - | - | - | - |
| 20 Sep | - | - | - | - | - |
| 21 Sep | - | - | - | - | - |
| 22 Sep | - | - | - | - | - |
| 23 Sep | - | - | - | - | - |
| 24 Sep | - | - | - | - | - |
| 25 Sep | - | - | - | - | - |
| 26 Sep | - | - | - | - | - |
| 27 Sep | - | - | - | - | - |
| 28 Sep | - | - | - | - | - |
| 29 Sep | - | - | - | - | - |
| 30 Sep | - | - | - | - | - |
Past weather Costa Mesa
| Sep 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 85.7 ºF | 67 ºF | |
| Average low temperature Av. low temp. | 70.6 ºF | 47 ºF | |
| Total precipitation Total precip. | 0.31 inch | 2.91 inch | |
| Total snowfall Total snowfall | - inch | 0 inch | |
| Highest max temperature Highest max temp. | 102.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 78.1 ºF | - | |
| Highest min temperature Highest min temp. | 78.1 ºF | - | |
| Lowest min temperature Lowest min temp. | 64.9 ºF | - | |
Past weather September 2026 incomplete - Missing data
Geo Costa Mesa - California
| Country | United States | |
|---|---|---|
| State | California | |
| County | - | |
| City | Costa Mesa | |
| Zip Code | 92626 | |
| Longitude | -117.92 dec. degr. | |
| Latitude | 33.64 dec. degr. | |
| Altitude - Elevation | 98ft | |
| ICAO | - | |
| IATA | - |
Date and Time Costa Mesa - California
| Local Time | 05:17 PM | |
|---|---|---|
| Sunrise | 06:33 AM | |
| Sunset | 07:00 PM | |
| Day/Night | Day | |
| Timezone | Pacific Daylight Time | |
| Timezone DB | America - Los Angeles |
Map of Costa Mesa - California
USGS National Map — Open interactive map
Costa Mesa weather averages
| Annual high temperature | 72ºF |
| Annual low temperature | 56ºF |
| Average annual precip. | 13.33 inch |
Station Data
Monthly averages Costa Mesa
Longitude: -117.919, Latitude: 33.6411
Average weather Costa Mesa, CA - 92626
Monthly: 1991-2020 normals
History: 2015-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...