Roswell weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Roswell in September. Check more long-term weather averages for Roswell in September before you book your next holiday to New Mexico in 2025/2026.

  • 30°C maximum daytime temperature in September in Roswell30
    30°C max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Roswell7
    7 days with some rainfall
  • 15°C minimum night-time temperature in September in Roswell15
    15°C min night temperature
  • 12 hours of daylight per day in September in Roswell12
    12 hours of daylight per day
  • Moderate heat & humidity in September in RoswellM
    Moderate heat & humidity
  • 46 mm monthly rainfall in September in Roswell46
    46 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in Roswell9
    9 (Very High) UV index

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The September weather guide for New Mexico (Roswell) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Roswell in September?

Daytime temperatures usually reach 30°C in Roswell in September with moderate heat and humidity, falling to 15°C at night.

How sunny is it in Roswell in September?

There are normally 9 hours of bright sunshine each day in Roswell in September - that's 71% of daylight hours.

Does it rain in Roswell in September?

There are usually 7 days with some rain in Roswell in September and the average monthly rainfall is 46mm.

Roswell September sunrise & sunset times

Browse the sunrise and sunset times for Roswell in September 2025. Select a month to view Roswell sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:33 18:23
Monday, 15th September 2025 05:42 18:04
Tuesday, 30th September 2025 05:52 17:43

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