SeasonMapSacramento weather in September
United States
September in Sacramento: hot, dry, with clean air — an excellent time to visit.
#4 of 12 months in Sacramento · #393 of 1383 destinations to visit in September · comfort 87/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Sacramento in September
Notes from nearby San Francisco (121 km away)
Sacramento doesn't have its own notes for September yet — these are about San Francisco, close enough to share the season.
September and October are the actual summer — the fog retreats and it's 22°C and clear. June and July are the grey ones, whatever the latitude suggests. Always carry a layer; crossing from the Mission to Ocean Beach can cost you ten degrees.
Other months in Sacramento
California's forum treats April as good weather statewide, with inland Central Valley cities like Sacramento running warmer than the coast by this point in spring. Regulars' standard advice for April travel anywhere in the state: pack layers, since mornings and evenings still run noticeably cooler than the afternoon.
Add your own note from Sacramento's card on the map.
Sacramento climate normals — September
| Daytime high | 32°C / 90°F | 🥵 hot |
|---|---|---|
| Nighttime low | 16°C / 60°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 3 mm / 0.1 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 48% | 🍃 comfortable |
| Dew point | 10°C / 50°F | |
| Sunshine | 11.4 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Sacramento in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsFarm-to-Fork Festival, Summer break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Sacramento's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherSacramento's best weather comes in April, May and October — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Sacramento in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Delta breeze
1 Jun – 15 SepWind seasonCool marine air pulled up from the bay through the delta most summer evenings, which is why a 38-degree afternoon here becomes a pleasant night. The weeks it fails are the ones people complain about.
- Hazard
Valley heat
20 Jun – 10 Sep · usuallyExtreme heatRuns of triple-digit afternoons come through the valley several times a summer and the city moves indoors and underground until evening. Everything outdoors here is scheduled before ten or after eight. Source ↗
- Hazard
Wildfire smoke season
15 Jul – 15 Oct · usuallySmoke from fires in the Sierra and the coast range settles into the valley and stays, because the same still air that traps winter fog traps this. Some Septembers the air here is the worst in the country. Source ↗
- Festival
Farm-to-Fork Festival
15–30 Sep · usuallyHarvestCrowdedA month of harvest dinners in late September ending in a free two-day street festival on Capitol Mall. The claim being made is that this valley grows the food the rest of the state cooks. Source ↗
Nearby, and something's on
Within 300 km of Sacramento — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Sacramento?
Sacramento in September — FAQ
- Is September a good time to visit Sacramento?
- September in Sacramento: hot, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Sacramento on SeasonMap's comfort score (87/100).
- What is the weather like in Sacramento in September?
- In September, Sacramento averages a daily high of 32.4°C and a low of 15.5°C, with about 3 mm of rain over roughly 0.7 rainy days.
- What is the air quality in Sacramento in September?
- Sacramento has a mean US Air Quality Index of about 39 in September.
Other months in Sacramento
Compare Sacramento in September
Warmer or cooler than Sacramento in September
Similar destinations in North America — September
Within 300 km: South Lake Tahoe's Hope Valley aspens around 25 Sep – 15 Oct, and Yosemite National Park's Tioga and Glacier Point roads open around 10 May – 10 Nov.