Thermograph

How unusual is the weather? Graded against ~45 years of local climate history.

Tempe, Arizona, United States climate

Average temperatures, precipitation and all-time records for Tempe, Arizona, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is July, averaging a high of 105°F, and its coldest is January, with an average low of 41°F.

Tempe is a city in Maricopa County, Arizona, United States, with the Census Bureau reporting a 2020 population of 180,587. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on Tempe, Arizona, United States's own ±7-day seasonal distribution.

High 103°F Below Normal · 36th pct
Low 80°F Normal · 43rd pct
Feels-like 108°F Below Normal · 28th pct
Humidity 17.0 g/m³ Very High · 94th pct
Wind 8 mph Low · 21st pct
Precip 0.00 in Dry

Open Tempe in the live weather grader →

Tempe average temperatures by month

Typical daily high and low, and average precipitation, for each month in Tempe, Arizona, United States, based on 1981–2026 records. The wettest month is August (0.10 in on an average day).

MonthAvg highAvg lowAvg precip
January 67°F 41°F 0.00 in
February 70°F 44°F 0.00 in
March 76°F 48°F 0.00 in
April 84°F 54°F 0.00 in
May 93°F 62°F 0.00 in
June 104°F 72°F 0.00 in
July 105°F 80°F 0.00 in
August 103°F 79°F 0.10 in
September 99°F 73°F 0.00 in
October 89°F 61°F 0.00 in
November 76°F 50°F 0.00 in
December 66°F 42°F 0.00 in

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

  • Hottest day on record: 123°F on 1995-07-28
  • Coldest day on record: 18°F on 1990-12-23

All Tempe weather records →

Percentiles compare each day to Tempe, Arizona, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →