Las Vegas Weather in September
- Latitude: 36.1663°
- Longitude: -115.1492°
- Country: United States of America
Are you planning a holiday with hopefully nice weather in Las Vegas in September 2026? Here you can find all information about the weather in Las Vegas in September:
- Overview: Las Vegas Weather and Climate in September
- Las Vegas weather by month
- Las Vegas weather in September // weather averages
- Current temperature and weather forecast for Las Vegas
Climate for Las Vegas in September
Temperatures in Las Vegas during September reach their peak on 04.09, with 36.9°C | 98.5°F, and their lowest on 30.09, dropping to 18.7°C | 65.7°F. The beginning of the month sees highs of 36.3°C | 97.3°F and lows near 23.5°C | 74.3°F. Mid-month averages are 34.2°C | 93.6°F for highs and 21.1°C | 70°F for lows. At month’s end, highs and lows average 32.7°C | 90.9°F and 19.5°C | 67.1°F, respectively. The hottest 10-day period occurs between 1-10, with 36.3°C | 97.3°F for highs. The coldest stretch falls on 21-30, with average lows of 19.5°C | 67.1°F.
In Las Vegas, sunshine in September varies between 11 hours and 12 hours per day. The sunniest day is 02.09, delivering 12 hours, while 22.09 sees just 11 hours. The average sunshine duration in the first ten days is 11 hours, rising to 11 hours mid-month, and reaching 11 hours at month’s end. The sunniest 10-day period is 1-10 (11 hours daily). The cloudiest period is 21-30, averaging just 11 hours.
In Las Vegas, September brings varying daily rainfall, ranging from 0.00/0.00 mm/in to 0.97/0.04 mm/in. The highest daily rainfall is seen on 26.09 (0.97/0.04 mm/in), while the lowest is on 29.09 (0.00/0.00 mm/in). Average daily precipitation in the first third of the month is 0.30/0.01 mm/in, with 0 rainy days. The middle third sees 0.20/0.01 mm/in and 0 wet days, while the last third averages 0.20/0.01 mm/in with 0 rainy days. The rainiest 10-day period falls between 1-10, totaling 0.30/0.01 mm/in. The driest period occurs between 11-20, with 0.00/0.00 mm/in.
In September, Las Vegas experiences humidity between 17% and 23%. The most humid day is 10.09 with 23%, and the least humid is 19.09 with 17%. Average humidity is 21% at the start of the month, 20% around the middle, and 19% as the month draws to a close. The most humid 10-day phase occurs between days 1-10, while the driest is from 21-30.
Las Vegas weather by month
| Avg. Temperature °C (°F) | Min. Temperature °C (°F) | Max. Temperature °C (°F) | Precipitation / Rainfall mm (in) | Humidity (%) | Rainy days (d) | avg. Sun hours (hours) | |
|---|---|---|---|---|---|---|---|
| January |
8.5 (47.4) |
3.9 (39) |
14.4 (58) |
25 (1) |
38% | 3 | 8.0 |
| February |
10.4 (50.7) |
5.1 (41.1) |
16.7 (62.1) |
31 (1.2) |
36% | 4 | 9.0 |
| March |
15.1 (59.1) |
8.8 (47.8) |
21.8 (71.2) |
17 (0.7) |
27% | 2 | 10.0 |
| April |
19.1 (66.4) |
12.3 (54.1) |
26.1 (78.9) |
8 (0.3) |
19% | 2 | 12.0 |
| May |
24.4 (75.8) |
17 (62.5) |
31.1 (88) |
6 (0.2) |
16% | 2 | 13.0 |
| June |
30.5 (87) |
22.8 (73) |
37.1 (98.9) |
2 (0.1) |
12% | 1 | 13.0 |
| July |
33.4 (92.1) |
26.5 (79.7) |
39.4 (102.9) |
8 (0.3) |
17% | 2 | 13.0 |
| August |
32 (89.7) |
25.4 (77.8) |
38 (100.5) |
11 (0.4) |
20% | 2 | 12.0 |
| September |
27.8 (82.1) |
21.1 (70.1) |
34.1 (93.4) |
8 (0.3) |
19% | 1 | 11.0 |
| October |
20.4 (68.8) |
14.6 (58.3) |
26.8 (80.3) |
9 (0.4) |
26% | 2 | 10.0 |
| November |
13.5 (56.2) |
8.5 (47.2) |
19.3 (66.8) |
10 (0.4) |
31% | 2 | 9.0 |
| December |
7.9 (46.2) |
3.6 (38.5) |
13.3 (55.9) |
22 (0.9) |
42% | 2 | 8.0 |
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. Temperature °C (°F) |
8.5 °C (47.4) °F |
10.4 °C (50.7) °F |
15.1 °C (59.1) °F |
19.1 °C (66.4) °F |
24.4 °C (75.8) °F |
30.5 °C (87) °F |
33.4 °C (92.1) °F |
32 °C (89.7) °F |
27.8 °C (82.1) °F |
20.4 °C (68.8) °F |
13.5 °C (56.2) °F |
7.9 °C (46.2) °F |
| Min. Temperature °C (°F) |
3.9 °C (39) °F |
5.1 °C (41.1) °F |
8.8 °C (47.8) °F |
12.3 °C (54.1) °F |
17 °C (62.5) °F |
22.8 °C (73) °F |
26.5 °C (79.7) °F |
25.4 °C (77.8) °F |
21.1 °C (70.1) °F |
14.6 °C (58.3) °F |
8.5 °C (47.2) °F |
3.6 °C (38.5) °F |
| Max. Temperature °C (°F) |
14.4 °C (58) °F |
16.7 °C (62.1) °F |
21.8 °C (71.2) °F |
26.1 °C (78.9) °F |
31.1 °C (88) °F |
37.1 °C (98.9) °F |
39.4 °C (102.9) °F |
38 °C (100.5) °F |
34.1 °C (93.4) °F |
26.8 °C (80.3) °F |
19.3 °C (66.8) °F |
13.3 °C (55.9) °F |
| Precipitation / Rainfall mm (in) |
25 (0) |
31 (1) |
17 (0) |
8 (0) |
6 (0) |
2 (0) |
8 (0) |
11 (0) |
8 (0) |
9 (0) |
10 (0) |
22 (0) |
| Humidity(%) | 38% | 36% | 27% | 19% | 16% | 12% | 17% | 20% | 19% | 26% | 31% | 42% |
| Rainy days (d) | 3 | 4 | 2 | 2 | 1 | 0 | 2 | 1 | 1 | 1 | 1 | 3 |
| avg. Sun hours (hours) | 8.4 | 8.8 | 10.4 | 11.6 | 12.6 | 13.1 | 12.9 | 12.1 | 11.1 | 9.9 | 8.9 | 8.1 |
Data: 1991 - 2021 Min. Temperature °C (°F), Max. Temperature °C (°F), Precipitation / Rainfall mm (in), Humidity, Rainy days. Data: 1999 - 2019: avg. Sun hours
🌡️ Temperature for Las Vegas in September
What day of September is considered the warmest in Las Vegas? |
During September, 04.09 is the day with the highest average temperature in Las Vegas, reaching 36.9°C | 98.5°F. |
|---|---|
On what day in September does it usually get coldest in Las Vegas? |
The lowest temperature of the month occurs on 30.09, with 18.7°C | 65.7°F. |
What fluctuations in temperature happen across September in Las Vegas? |
During the first third of the month, highs typically reach 36.3°C | 97.3°F, while lows average 23.5°C | 74.3°F. Mid-month (days 11–20), highs are around 34.2°C | 93.6°F and lows at 21.1°C | 70°F. By the month’s end, highs rise to 32.7°C | 90.9°F, and lows drop to 19.5°C | 67.1°F. |
In September, which 10-day phase is the warmest in Las Vegas? |
The period from 1-10 marks the warmest 10-day stretch, with highs at 36.3°C | 97.3°F. |
In September, which 10-day phase is the coldest in Las Vegas? |
The lowest average temperatures, 19.5°C | 67.1°F, occur between 21-30. |
☀️ Sunshine Hours for Las Vegas in September
What day in September has the peak sunshine hours in Las Vegas? |
On 02.09, the average sunshine duration is 12 hours. |
|---|---|
What day in September has the fewest hours of sun in Las Vegas? |
On 22.09, sunshine lasts just 11 hours, the lowest of the month. |
How much do sunshine hours change from day to day in Las Vegas during September? |
Sunshine duration starts at around 11 hours in the first third of the month, rises to 11 hours in the middle third, and reaches 11 hours in the final days. |
In September, what 10-day phase records the most sunshine in Las Vegas? |
The 10-day stretch from 1-10 sees the most sunshine, averaging 11 hours daily. |
In September, what 10-day phase records the least sunshine in Las Vegas? |
Between days 21-30, sunshine is at its lowest, averaging only 11 hours daily. |
Las Vegas weather and climate for further months
Las Vegas weather in September // weather averages
| Temperature (°C) | (°F) | Temperature max. (°C) | (°F) | Temperature min. (°C) | (°F) | Precipitation / Rainfall (mm) | (inch) | |
|---|---|---|---|---|
| 1. September | 31 °C | 88 °F | 37 °C | 98 °F | 24 °C | 76 °F | 0.4 mm | 0.0 inch. |
| 2. September | 31 °C | 88 °F | 37 °C | 98 °F | 24 °C | 76 °F | 0.2 mm | 0.0 inch. |
| 3. September | 31 °C | 87 °F | 37 °C | 98 °F | 24 °C | 76 °F | 0.2 mm | 0.0 inch. |
| 4. September | 31 °C | 87 °F | 37 °C | 99 °F | 24 °C | 75 °F | 0.1 mm | 0.0 inch. |
| 5. September | 30 °C | 87 °F | 37 °C | 98 °F | 24 °C | 75 °F | 0.0 mm | 0.0 inch. |
| 6. September | 30 °C | 86 °F | 36 °C | 97 °F | 23 °C | 73 °F | 0.1 mm | 0.0 inch. |
| 7. September | 30 °C | 86 °F | 36 °C | 98 °F | 23 °C | 74 °F | 0.2 mm | 0.0 inch. |
| 8. September | 30 °C | 86 °F | 36 °C | 97 °F | 23 °C | 74 °F | 0.6 mm | 0.0 inch. |
| 9. September | 29 °C | 85 °F | 36 °C | 96 °F | 23 °C | 73 °F | 0.4 mm | 0.0 inch. |
| 10. September | 29 °C | 84 °F | 35 °C | 94 °F | 22 °C | 72 °F | 0.4 mm | 0.0 inch. |
| 11. September | 29 °C | 83 °F | 34 °C | 94 °F | 22 °C | 72 °F | 0.7 mm | 0.0 inch. |
| 12. September | 28 °C | 83 °F | 35 °C | 94 °F | 22 °C | 72 °F | 0.4 mm | 0.0 inch. |
| 13. September | 28 °C | 83 °F | 35 °C | 95 °F | 21 °C | 71 °F | 0.2 mm | 0.0 inch. |
| 14. September | 28 °C | 82 °F | 34 °C | 94 °F | 21 °C | 70 °F | 0.1 mm | 0.0 inch. |
| 15. September | 28 °C | 82 °F | 34 °C | 93 °F | 21 °C | 70 °F | 0.1 mm | 0.0 inch. |
| 16. September | 28 °C | 82 °F | 34 °C | 93 °F | 21 °C | 71 °F | 0.0 mm | 0.0 inch. |
| 17. September | 28 °C | 82 °F | 34 °C | 93 °F | 21 °C | 70 °F | 0.0 mm | 0.0 inch. |
| 18. September | 27 °C | 81 °F | 34 °C | 93 °F | 20 °C | 68 °F | 0.0 mm | 0.0 inch. |
| 19. September | 27 °C | 81 °F | 34 °C | 93 °F | 20 °C | 69 °F | 0.0 mm | 0.0 inch. |
| 20. September | 27 °C | 81 °F | 34 °C | 93 °F | 20 °C | 68 °F | 0.0 mm | 0.0 inch. |
| 21. September | 27 °C | 80 °F | 33 °C | 92 °F | 20 °C | 68 °F | 0.0 mm | 0.0 inch. |
| 22. September | 26 °C | 79 °F | 33 °C | 91 °F | 19 °C | 67 °F | 0.5 mm | 0.0 inch. |
| 23. September | 26 °C | 79 °F | 32 °C | 90 °F | 20 °C | 67 °F | 0.1 mm | 0.0 inch. |
| 24. September | 26 °C | 79 °F | 32 °C | 90 °F | 19 °C | 67 °F | 0.0 mm | 0.0 inch. |
| 25. September | 26 °C | 80 °F | 33 °C | 91 °F | 20 °C | 68 °F | 0.3 mm | 0.0 inch. |
| 26. September | 26 °C | 79 °F | 33 °C | 92 °F | 20 °C | 67 °F | 1.0 mm | 0.0 inch. |
| 27. September | 26 °C | 79 °F | 33 °C | 92 °F | 20 °C | 67 °F | 0.1 mm | 0.0 inch. |
| 28. September | 26 °C | 80 °F | 33 °C | 91 °F | 20 °C | 68 °F | 0.0 mm | 0.0 inch. |
| 29. September | 26 °C | 79 °F | 32 °C | 90 °F | 19 °C | 67 °F | 0.0 mm | 0.0 inch. |
| 30. September | 25 °C | 78 °F | 32 °C | 89 °F | 19 °C | 66 °F | 0.0 mm | 0.0 inch. |
💧 Humidity for Las Vegas in September
Which day in September is considered the most humid in Las Vegas? |
The month’s highest humidity is observed on 10.09, reaching 23%. |
|---|---|
Which day in September is considered the least humid in Las Vegas? |
At just 17%, 19.09 is the least humid day of the month. |
How much does humidity change across September in Las Vegas? |
Humidity begins the month at 21%, increases to 20% in the second third, and ends at 19% in the final stretch. |
What period of 10 days in September is known for the highest humidity in Las Vegas? |
The most moisture-laden stretch is from 1-10, with humidity averaging 21%. |
What 10-day portion of September shows the driest and least humid conditions in Las Vegas? |
In comparison, the lowest average humidity is recorded between 21-30, at just 19%. |
🌧️ Rainfall for Las Vegas in September
What day of September marks the most precipitation in Las Vegas? |
26.09 is usually the rainiest day of the month, averaging 0.97/0.04 mm/in. |
|---|---|
What day in September has the least precipitation in Las Vegas? |
29.09 marks the driest day, with only 0.00/0.00 mm/in of rainfall. |
In Las Vegas, how does rainfall develop over the course of September? |
During the first third of the month, rainfall averages 0.30/0.01 mm/in with 0 rainy days. Mid-month, this increases to 0.20/0.01 mm/in and 0 rainy days. By the final part of the month, values drop to 0.20/0.01 mm/in, with 0 days experiencing rain. |
In September, what 10-day phase sees peak rain levels in Las Vegas? |
Rainfall is at its highest during the 10-day span between 1-10, averaging 0.30/0.01 mm/in. |
Which third of September is driest in terms of rain in Las Vegas? |
The least rainy 10-day period falls between 11-20, with an average precipitation of only 0.00/0.00 mm/in. |
✈️ Airport close to Las Vegas
The closest Airports of Las Vegas are: McCarran International Airport (LAS) 8.83km,Boulder City Municipal Airport (BLD) 34.95km,Laughlin/Bullhead International Airport (IFP) 123.46km
You can reach Las Vegas from this Cities by Plane: London (LGW), Baltimore (BWI), Toronto (YYZ), Cleveland (CLE), Detroit (DTW), Duluth (DLH), Honolulu (HNL), Dallas (DFW), Saskatoon (YXE), Regina (YQR), San Francisco (SFO), Calgary (YYC), Flint (FNT), San Antonio (SAT), Frankfurt am Main (FRA), Houston (HOU), New Orleans (MSY), Shreveport (SHV), Seattle (SEA), Edmonton (YEG)