14,742 places · 1991–2020 normals

United States in
September.

Day, night and rain figures are the measured September normals from each place’s qualifying NOAA station. Open a place for that month’s full answer.

Read these as long-term planning evidence, not a forecast. Compare daytime and overnight temperature together, then use rainfall and wet-day frequency to judge how often outdoor plans may need flexibility. Mountain, coastal and island conditions can differ sharply over short distances, so the linked place page and its station distance matter more than the country average. Before booking, check current local forecasts, seasonal closures, daylight, transport and any weather warnings. Data collection uses the 1991–2020 station-normal period; the published evidence was rechecked on 3 September 2026.

Use the table to shortlist places, then open each place page to compare the reporting station, distance and all twelve months. A small country table can contain only a few qualifying stations; that is a coverage limit, not evidence that other places share the same conditions.

Jan Feb Mar Apr May Jun Jul AugSepOct Nov Dec

September normals for the largest listed places in United States
Place	Day	Night	Rain	Wet days	Comfort
New York CityNew York	24.7°C	16.5°C	110 mm	7.2	81
Los AngelesCalifornia	28.8°C	18.1°C	3 mm	0.3	79
BrooklynNew York	24.4°C	16.6°C	106 mm	7.6	82
ChicagoIllinois	24.8°C	15.1°C	68 mm	6.7	89
QueensNew York	24.6°C	16.4°C	91 mm	7.1	84
HoustonTexas	32.5°C	22.2°C	103 mm	5.9	47
PhoenixArizona	38.1°C	25.4°C	15 mm	1.8	35
PhiladelphiaPennsylvania	26.5°C	17.4°C	116 mm	7.5	72
San AntonioTexas	32.2°C	20.5°C	110 mm	6.6	49
ManhattanNew York	24.7°C	16.5°C	110 mm	7.2	81
San DiegoCalifornia	24.9°C	18.8°C	3 mm	0.5	90
DallasTexas	32°C	21.2°C	79 mm	4.6	55
JacksonvilleFlorida	31.5°C	23.5°C	157 mm	10	37
San JoseCalifornia	27.1°C	14.1°C	2 mm	0.3	88
CharlotteNorth Carolina	28.1°C	17°C	94 mm	6	72
IndianapolisIndiana	24.6°C	12.4°C	89 mm	6.2	83
San FranciscoCalifornia	21.6°C	13.3°C	3 mm	0.7	89
SeattleWashington	21.6°C	12.4°C	37 mm	5.7	85
DenverColorado	27.9°C	10°C	30 mm	5	76
WashingtonDistrict of Columbia	26.8°C	17.6°C	100 mm	6.9	73
Oklahoma CityOklahoma	29.2°C	17°C	94 mm	5.9	68
El PasoTexas	31.4°C	18.1°C	39 mm	3.9	69
BostonMassachusetts	23°C	14.6°C	90 mm	7.1	85
PortlandOregon	23.9°C	12.8°C	41 mm	5.3	93
DetroitMichigan	23.7°C	13.7°C	81 mm	7.3	86
Las VegasNevada	34.9°C	21.4°C	5 mm	0.8	52
New South MemphisTennessee	29.9°C	19°C	77 mm	5.5	65
MemphisTennessee	29.9°C	19°C	77 mm	5.5	65
BaltimoreMaryland	27°C	18.6°C	118 mm	6.2	69
South BostonMassachusetts	23°C	14.6°C	90 mm	7.1	85
AlbuquerqueNew Mexico	28.2°C	14.6°C	29 mm	4.1	85
MilwaukeeWisconsin	22.5°C	13.3°C	80 mm	6.7	82
TucsonArizona	35.1°C	22.1°C	32 mm	2.9	51
FresnoCalifornia	33.3°C	17°C	1 mm	0.3	66
SacramentoCalifornia	32°C	15.1°C	4 mm	0.6	73
AtlantaGeorgia	29°C	17.4°C	92 mm	5.4	69
MiamiFlorida	30.7°C	25.4°C	193 mm	12.6	28
OmahaNebraska	25.8°C	12.9°C	75 mm	6	82
RaleighNorth Carolina	27.7°C	17.3°C	148 mm	6.6	65
Kansas CityMissouri	26.9°C	16.2°C	96 mm	6.4	76
Long BeachCalifornia	28.3°C	17.7°C	2 mm	0.3	81
MesaArizona	37.9°C	21.7°C	18 mm	2.1	42
Staten IslandNew York	25.6°C	16.1°C	97 mm	7.1	80
Colorado SpringsColorado	24.7°C	9.1°C	34 mm	4.4	86
Virginia BeachVirginia	27.1°C	18.5°C	102 mm	6.6	71
OaklandCalifornia	23.7°C	14.3°C	3 mm	0.5	98
TampaFlorida	32°C	23.8°C	155 mm	10.3	34
TulsaOklahoma	29.2°C	17.2°C	98 mm	6.5	67
MinneapolisMinnesota	23.3°C	12.4°C	86 mm	7.7	82
ArlingtonTexas	31.1°C	19.2°C	83 mm	5.3	60
BakersfieldCalifornia	32.9°C	17.3°C	2 mm	0.3	67
ClevelandOhio	23.7°C	15.9°C	78 mm	7.7	87
New OrleansLouisiana	31.4°C	22.5°C	206 mm	9.5	32
AuroraColorado	26.1°C	9.3°C	33 mm	4.6	81
HonoluluHawaii	31.1°C	23.1°C	26 mm	5.2	60
AnaheimCalifornia	30.6°C	17.6°C	4 mm	0.5	74
West RaleighNorth Carolina	27.7°C	17.3°C	148 mm	6.6	65
OrlandoFlorida	31.9°C	23.5°C	171 mm	12.1	31
LexingtonKentucky	26.5°C	14.6°C	87 mm	6.4	81
RiversideCalifornia	33.7°C	16.7°C	3 mm	0.3	65
Corpus ChristiTexas	32.2°C	23.1°C	136 mm	8.1	39
Lexington-FayetteKentucky	26.5°C	14.6°C	87 mm	6.4	81
CincinnatiOhio	26.4°C	13.3°C	80 mm	6.4	80
Santa AnaCalifornia	29.4°C	17.4°C	3 mm	0.4	78
StocktonCalifornia	32.6°C	12.6°C	2 mm	0.4	67
PittsburghPennsylvania	25.5°C	13.6°C	82 mm	7.3	82
Saint PaulMinnesota	23.1°C	12.1°C	77 mm	6.9	82

United States inSeptember.

United States in
September.