Mission District weather in September

In September, Mission District sees average daytime highs of 67°F and overnight lows near 56°F, with 0.1 in of rain across 0.4 wet days and about 12.3 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 67°F through the month. The sky is clear or mostly clear about 66% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Mission District's 1st-clearest and 10th-windiest month. For the whole year in context, see Mission District's year-round climate.

Daytime high
67°
1st warmest
Overnight low
56°
11th coldest
Rainfall
0.1 in
0.4 wet days
Daylight
12 h 12 min
5:57 AM – 6:11 PM
Cloud cover
32%
1st clearest
Wind
7 mph
10th windiest
Solar energy
5.68 kWh/m²
Travel score
8.1
out of 10

Mission District is neighborhood in San Francisco, California, USA.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 67°F through the month.

A typical September day in Mission District reaches about 67°F in the afternoon and slips back to 56°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 73°F. Set against its neighbours, September runs on par with August and about 2°F warmer than October.

50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16756
26756
36756
46756
56756
66756
76756
86756
96756
106756
116756
126756
136756
146756
156756
166756
176756
186756
196756
206756
216756
226756
236756
246756
256756
266756
276756
286756
296756
306755

Mission District weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan55° / 47°4.310.19.73.7
Feb57° / 48°4.49.310.54.0
Mar58° / 49°3.29.311.74.5
Apr59° / 50°1.5512.95.4
May61° / 52°0.72.8146.3
Jun64° / 54°0.20.814.67.5
Jul65° / 55°0.00.114.37.8
Aug66° / 56°0.00.113.57.9
Sep67° / 56°0.10.412.38.1
Oct65° / 54°0.93.1117.5
Nov60° / 50°2.26.1105.4
Dec56° / 47°4.210.19.43.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 66% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 16%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18812
28812
38812
48812
58812
68713
78713
88614
98614
108515
118515
128515
138515
148515
158515
168515
178515
188515
198416
208317
218317
228317
238317
248218
258218
268218
278119
288119
298020
308020

Chance of precipitation in September

Any precipitation

Mission District gets around 0.1 in of rain over 0.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 2% and peaks near 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
152
162
172
182
192
202
212
222
233
243
253
264
274
284
295
305

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 65% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
159392
260382
360382
460382
561372
661372
762362
862362
962362
1062362
1163352
1263352
1363352
1463352
1564342
1664342
1764342
1864342
1965332
2066331
2167321
2267321
2368311
2468311
2569301
2670291
2770291
2871281
2972271
3072271

Wind in September

Winds average 7 mph in September.

Across September, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
47light breeze
57light breeze
67light breeze
77light breeze
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over September. Sunrise moves from 5:44 AM to 6:09 AM, and sunset from 6:35 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:446:35
212.85:456:33
312.85:466:32
412.75:466:30
512.75:476:29
612.75:486:27
712.65:496:26
812.65:506:24
912.55:516:22
1012.55:526:21
1112.45:526:19
1212.45:536:18
1312.45:546:16
1412.35:556:14
1512.35:566:13
1612.25:576:11
1712.25:586:10
1812.25:596:08
1912.15:596:06
2012.16:006:05
2112.06:016:03
2212.06:026:01
2311.96:036:00
2411.96:045:58
2511.96:055:57
2611.86:065:55
2711.86:075:53
2811.76:075:52
2911.76:085:50
3011.76:095:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.68 kWh/m².

For context, solar energy here swings from a low near 2.19 kWh/m² to a high of 7.72 kWh/m² in June across the year — September's 5.68 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.2Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.0Intense
86.0Intense
96.0Bright
105.9Bright
115.9Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.6Bright
175.6Bright
185.5Bright
195.5Bright
205.5Bright
215.4Bright
225.4Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.1Bright
285.1Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Mission District

In seasonPeak

None of Mission District's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Mission District's rainy season runs November–March, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Mission District?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.1
Sightseeing
1st-best month of the year
3.8
Beach & pool
1st-best month of the year

September is one of the better times to visit Mission District for general sightseeing.

What to pack for Mission District in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Mission District sees daytime highs around 67°F and nights near 56°F. Worth packing: sun protection.

sun protection

Sea temperature near Mission District in September

The nearest coast averages about 58°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 mi away) is warmest in September at about 58°F and coldest in April near 53°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

52°54°56°58°60°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°F)Comfort
Jan53Bracing
Feb53Bracing
Mar54Bracing
Apr53Bracing
May53Bracing
Jun54Bracing
Jul56Bracing
Aug58Bracing
Sep58Bracing
Oct57Bracing
Nov55Bracing
Dec54Bracing

UV index in Mission District in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mission District peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 15UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep6High
Oct5High
Nov2Moderate
Dec2Moderate

Air quality in Mission District in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Mission District is worst in August — around 25 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (June, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateAug 1824 µg/m³Jun 1110 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar16Moderate
Apr12Moderate
May10Good
Jun10Good
Jul11Good
Aug25Moderate
Sep17Moderate
Oct20Moderate
Nov18Moderate
Dec13Moderate
Location & terrain

Where is Mission District?

Mission District sits at 37.8°N, 122.4°W, 46 ft above sea level, in United States. The nearest listed city is San Francisco, 1.2 mi away.

Topography around Mission District

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mission District.

Within 2 miles, the terrain around Mission District has significant variations in elevation — a maximum elevation change of 873 ft around an average of 171 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,316 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,042 ft.

The land around Mission District is covered by artificial surfaces (88%) within 2 miles, water (60%) and artificial surfaces (25%) within 10 miles, and water (40%), grassland (23%) and trees (21%) within 50 miles.

2 miles
873 ft
10 miles
1,316 ft
50 miles
4,042 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: San Francisco 1.2 mi · Noe Valley 1.2 mi · Chinatown 2.5 mi · Bayview-Hunters Point 3.1 mi · Visitacion Valley 3.1 mi · Parkside 3.7 mi · Daly City 4.3 mi · South San Francisco 7.5 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mission District (37.7599°, -122.4191°, elevation 46 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).