Mammoth Lakes, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Mammoth Lakes weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast16%—68°54°—
- MondayJul 6Overcast——72°51°+4°
- TuesdayJul 7Overcast——78°52°+6°
- WednesdayJul 8Clear——81°52°+3°
- ThursdayJul 9Clear——80°52°-1°
- FridayJul 10Clear——85°51°+5°
- SaturdayJul 11Overcast——88°56°+3°
AQI 42 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.0 µg/m³ (AQI 60), ratio 0.60 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 47. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 47
- UV peak
- 6.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 14.0 µg/m³ (AQI 60), ratio 0.60 with 8 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.60
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:14 PM
- Moonset
- 11:14 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Mammoth Lakes at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: April 2 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 93546
16-Day Forecast — Mammoth Lakes
- Sun68°54°16%
- Mon72°51°5%
- Tue78°52°2%
- Wed81°52°0%
- Thu80°52°0%
- Fri85°51°1%
- Sat88°56°1%
- Sun85°56°7%
- Mon83°60°22%
- Tue82°59°31%
- Wed78°58°26%
- Thu73°52°13%
- Fri82°52°27%
- Sat86°58°24%
- Sun84°60°25%
- Mon84°59°22%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Mammoth Lakes
SPC includes Mammoth Lakes in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Mammoth Lakes
- 93546