Mexico climate

Mexico Weather in September

NOAA 1991-2020 normals for Rumford 1 Sse, 3.4 km from Mexico

Average highs run from 76°F on September 1 to 65°F on September 30, and lows from 53°F to 43°F. Normal precipitation for the month is 3.70 in over about 9 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Mexico, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
71°F
Average low
48°F
Precipitation
3.70 in
Record high
91°FSep 10, 2002
Record low
21°FSep 29, 2000
Chance of a freeze
22%
Days of 90°F or more
0.5
Daylight
13 h 14 min to 11 h 46 min
Cloud cover
57%
Humidity
82%
Dew point
51°F
Wind
4.0 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 176°F53°F84°F 201037°F 200232%0%
Sep 276°F53°F85°F 201035°F 200132%0%
Sep 375°F53°F84°F 201037°F 200432%0%
Sep 475°F53°F87°F 199940°F 200432%0%
Sep 575°F52°F87°F 199934°F 200032%0%
Sep 675°F52°F84°F 202332°F 200031%0%
Sep 774°F52°F84°F 202331°F 200031%0%
Sep 874°F51°F84°F 202337°F 200331%0%
Sep 974°F51°F86°F 200231°F 201831%0%
Sep 1073°F51°F91°F 200232°F 200331%0%
Sep 1173°F50°F88°F 200230°F 200631%0%
Sep 1273°F50°F84°F 201330°F 200631%0%
Sep 1372°F50°F76°F 200531°F 200631%0%
Sep 1472°F49°F77°F 200535°F 200431%0%
Sep 1571°F49°F80°F 200531°F 200131%0%
Sep 1671°F48°F79°F 200333°F 202031%0%
Sep 1771°F48°F80°F 201830°F 200031%0%
Sep 1870°F48°F79°F 201831°F 199731%0%
Sep 1970°F47°F77°F 201527°F 201431%0%
Sep 2069°F47°F77°F 200226°F 201431%0%
Sep 2169°F46°F76°F 200026°F 202031%0%
Sep 2268°F46°F80°F 200227°F 202031%0%
Sep 2368°F46°F77°F 201727°F 202031%0%
Sep 2467°F45°F82°F 201727°F 199731%0%
Sep 2567°F45°F83°F 201729°F 199732%0%
Sep 2667°F44°F84°F 201727°F 200932%0%
Sep 2766°F44°F83°F 201728°F 201632%0%
Sep 2866°F44°F82°F 201729°F 201232%0%
Sep 2965°F43°F78°F 201421°F 200032%0%
Sep 3065°F43°F76°F 202023°F 200032%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mexico, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:05 AM, sunset 7:19 PM
September 30
sunrise 6:39 AM, sunset 6:25 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00177325 (Rumford 1 Sse), public domain. Records: NOAA GHCN-Daily, station USC00177039, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.