Arivaca Junction climate

Arivaca Junction Weather in October

NOAA 1991-2020 normals for Tumacacori Nm, 17.7 km from Arivaca Junction

Average highs run from 85°F on October 1 to 77°F on October 31, and lows from 54°F to 43°F. Normal precipitation for the month is 1.09 in over about 3 wet days.

October day by day

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

Normal daily high and low temperature at Arivaca Junction, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

October at a glance

Average high
81°F
Average low
48°F
Precipitation
1.09 in
Record high
100°FOct 1, 2020
Record low
24°FOct 29, 2009
Chance of a freeze
23%
Days of 90°F or more
6.2
Daylight
11 h 51 min to 10 h 55 min
Cloud cover
25%
Humidity
41%
Dew point
39°F
Wind
8.1 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
Oct 185°F54°F100°F 202046°F 200410%0%
Oct 285°F53°F99°F 202047°F 201410%0%
Oct 385°F53°F99°F 202443°F 200210%0%
Oct 484°F52°F99°F 202039°F 200210%0%
Oct 584°F52°F99°F 202447°F 20029%0%
Oct 684°F52°F100°F 202444°F 20089%0%
Oct 784°F51°F99°F 202442°F 20079%0%
Oct 883°F51°F96°F 202437°F 20119%0%
Oct 983°F50°F93°F 202439°F 20119%0%
Oct 1083°F50°F95°F 202441°F 20118%0%
Oct 1183°F50°F96°F 202440°F 20058%0%
Oct 1282°F49°F97°F 202439°F 20088%0%
Oct 1382°F49°F97°F 202032°F 20088%0%
Oct 1482°F48°F96°F 202035°F 20088%0%
Oct 1581°F48°F95°F 201137°F 20218%0%
Oct 1681°F48°F98°F 202039°F 20068%0%
Oct 1781°F47°F94°F 200936°F 20138%0%
Oct 1881°F47°F93°F 202337°F 20138%0%
Oct 1980°F47°F96°F 202339°F 20068%0%
Oct 2080°F46°F97°F 202338°F 20248%0%
Oct 2180°F46°F92°F 201639°F 20138%0%
Oct 2280°F46°F93°F 202441°F 20138%0%
Oct 2379°F45°F95°F 201739°F 20048%0%
Oct 2479°F45°F94°F 201737°F 20228%0%
Oct 2579°F45°F93°F 201732°F 20228%0%
Oct 2678°F44°F95°F 202435°F 20208%0%
Oct 2778°F44°F95°F 202427°F 20208%0%
Oct 2878°F44°F88°F 200731°F 20098%0%
Oct 2978°F44°F89°F 201024°F 20098%0%
Oct 3077°F43°F90°F 200128°F 20097%0%
Oct 3177°F43°F88°F 200836°F 20047%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Arivaca Junction, in percent, and of at least 0.1 inch of snowfall.02.557.51012.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

October 1
sunrise 6:18 AM, sunset 6:09 PM
October 31
sunrise 6:40 AM, sunset 5:35 PM

Every day of October: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00028865 (Tumacacori Nm), public domain. Records: NOAA GHCN-Daily, station USW00003196, 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.