Norman weather in September

In September, Norman sees average daytime highs of 84°F and overnight lows near 64°F, with 2.9 in of rain across 6.6 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 88°F in the first days to 80°F by the end. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Norman's 2nd-clearest and 11th-windiest month. For the whole year in context, see Norman's year-round climate.

Daytime high
84°
4th warmest
Overnight low
64°
9th coldest
Rainfall
2.9 in
6.6 wet days
Daylight
12 h 12 min
6:18 AM – 6:31 PM
Cloud cover
40%
2nd clearest
Wind
8 mph
11th windiest
Solar energy
5.09 kWh/m²
Travel score
6.3
out of 10

Norman is city in Oklahoma, United States of America.

Density
261/km²
people per km²
Founded
1889

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 88°F in the first days to 80°F by the end.

A typical September day in Norman reaches about 84°F in the afternoon and slips back to 64°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 93°F. Set against its neighbours, September runs about 8°F cooler than August and about 11°F warmer than October.

40°60°80°100°151015202530
Avg high (°F)Avg low (°F)
18970
28969
38969
48869
58868
68768
78767
88667
98667
108667
118566
128566
138565
148465
158465
168364
178364
188364
198363
208263
218262
228262
238261
248161
258161
268160
278060
288059
298059
307958

How September really feels in Norman

Once humidity and wind are folded in, September averages 2 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
2
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Norman weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan49° / 31°1.54.719.92.5
Feb54° / 34°1.85.71.310.73.7
Mar63° / 42°2.97.70.711.75.9
Apr71° / 51°3.98.6012.96.9
May79° / 60°4.410.7013.86.6
Jun88° / 69°3.79014.34.7
Jul93° / 73°2.26.3014.13.5
Aug92° / 72°2.26.5013.33.8
Sep84° / 64°2.96.6012.26.3
Oct73° / 52°3.07011.17.6
Nov61° / 41°2.05.80.410.15.6
Dec51° / 33°1.95.11.29.72.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17525
27426
37327
47228
57228
67129
77030
86931
96832
106733
116733
126733
136634
146634
156634
166634
176535
186535
196634
206832
216931
227030
237129
247327
257426
267525
277525
287624
297624
307624

Chance of precipitation in September

Any precipitation

Norman gets around 2.9 in of rain over 6.6 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 23% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
120
221
321
421
522
622
723
823
924
1024
1125
1225
1325
1425
1526
1626
1725
1825
1924
2024
2123
2222
2322
2421
2520
2620
2719
2819
2919
3020

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 34% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
181628418
291628408
3101627398
4111727377
5131727377
6141726367
7151726357
8161726357
9181625357
10191625346
11201624346
12211524346
13221524336
14231524326
15251523325
16261523315
17271523305
18291523295
19301622274
20321622264
21341621254
22361721234
23381720213
24401819203
25421819183
26441818173
27461917162
28471916152
29492016142
30502015132

Wind in September

Winds average 8 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.

051015151015202530
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107light breeze
117light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 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 66 minutes over September. Sunrise moves from 6:06 AM to 6:28 AM, and sunset from 6:53 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:066:53
212.76:076:51
312.76:086:50
412.76:086:48
512.66:096:47
612.66:106:46
712.66:116:44
812.56:116:43
912.56:126:41
1012.46:136:40
1112.46:146:38
1212.46:146:37
1312.36:156:35
1412.36:166:34
1512.36:176:32
1612.26:186:31
1712.26:186:29
1812.16:196:28
1912.16:206:26
2012.16:216:25
2112.06:216:23
2212.06:226:22
2312.06:236:20
2411.96:246:19
2511.96:246:17
2611.86:256:16
2711.86:266:14
2811.86:276:13
2911.76:286:11
3011.76:286:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.09 kWh/m².

For context, solar energy here swings from a low near 2.5 kWh/m² to a high of 6.89 kWh/m² in July across the year — September's 5.09 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
Planning a trip in September

Is September a good time to visit Norman?

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

6.3
Sightseeing
4th-best month of the year
7.5
Beach & pool
1st-best month of the year

September is a reasonable time to visit Norman for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Norman in September

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

In September, Norman sees daytime highs around 84°F and nights near 64°F. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

UV index in Norman in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Norman peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr9Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug10Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate
Location & terrain

Where is Norman?

Norman sits at 35.2°N, 97.4°W, 1,171 ft above sea level, in United States. The nearest listed city is Moore, 8.7 mi away.

Topography around Norman

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

Within 2 miles, the terrain around Norman has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 1,178 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 322 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 938 ft.

The land around Norman is covered by artificial surfaces (47%), trees (29%) and grassland (22%) within 2 miles, grassland (44%) and trees (34%) within 10 miles, and grassland (51%) and trees (33%) within 50 miles.

2 miles
125 ft
10 miles
322 ft
50 miles
938 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Moore 8.7 mi · Del City 15 mi · Midwest City 16 mi · Oklahoma City 17 mi · Mustang 19 mi · Bethany 23 mi · Yukon 27 mi · Edmond 30 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 Norman (35.2226°, -97.4395°, elevation 1,171 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).