Apache Junction climate — normals and trends
Apache Junction (United States) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 20.3 °C and it receives 329 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (31.9 °C on average) and the coldest is January (9.2 °C). Rainfall peaks in January.
Apache Junction averages 14 frost days, 159 hot days (≥ 30 °C) and 42 rainy days per year.
Apache Junction has warmed by +2.9 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 26 to 2 per year over the period.
The hottest day of the period reached 46.0 °C (on 19 June 2016) and the coldest -10.6 °C (on 23 December 1990).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Apache JunctionArizona
- coords
- 33.42°, -111.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.3°C
Average daily high
27.2°C
Average daily low
13.1°C
Annual rainfall
329mm
Sunshine / day
11.2h
Mean relative humidity
39%
Average peak wind
12.8km/h
Seasonal range
22.7°C
Frost days (< 0 °C)
14 d/yr
Hot days (≥ 30 °C)
159 d/yr
Rainy days (≥ 1 mm)
42 d/yr
Annual snowfall
1.9 cm
Average feels-like high
25.4 °C
Average feels-like low
10.9 °C
Average peak gust
32.4 km/h
Tropical nights (≥ 20 °C)
100 d/yr
Solar radiation
21.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.69 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
46.0 °C
19 June 2016
Coldest day
-10.6 °C
23 December 1990
Wettest day
127 mm
5 September 1970
Windiest day
39.7 km/h
8 April 2013
Strongest gust
113.0 km/h
21 January 2010
Hottest feels-like
45.9 °C
26 June 1990
Coldest feels-like
-15.5 °C
23 December 1990
Snowiest day
7.1 cm
3 February 1985
Sunniest day
14.2 h
25 June 1946
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 16.8 °C | +0.3 °C | 2 mm | -46 mm |
| Feb | 23.0 °C | +4.5 °C | 3 mm | -39 mm |
| Mar | 22.6 °C | +1.2 °C | 62 mm | +21 mm |
| Apr | 26.6 °C | +0.5 °C | 5 mm | -9 mm |
| May | 31.7 °C | +0.5 °C | 4 mm | -1 mm |
| Jun | 38.1 °C | +1.4 °C | 11 mm | +8 mm |
| Jul | 38.6 °C | +0.6 °C | 18 mm | -1 mm |
| Aug | 39.6 °C | +2.8 °C | 7 mm | -25 mm |
| Sep | 34.6 °C | +0.2 °C | 63 mm | +33 mm |
| Oct | 28.3 °C | -0.1 °C | 37 mm | +12 mm |
| Nov | 23.4 °C | +1.8 °C | 53 mm | +25 mm |
| Dec | 20.9 °C | +4.0 °C | 5 mm | -39 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Apache Junction?
Apache Junction has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.3 °C and it receives 329 mm of precipitation per year.
What is the hottest day ever recorded in Apache Junction?
The hottest day measured in Apache Junction between 1940 and 2025 was 19 June 2016, reaching 46.0 °C.
What is the coldest day in Apache Junction?
The coldest day measured in Apache Junction between 1940 and 2025 was 23 December 1990, at -10.6 °C.
Does it snow in Apache Junction?
Yes. Apache Junction gets on average 1.9 cm of snow per year and has around 14 frost days.
Has the climate of Apache Junction warmed?
Yes: Apache Junction warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Apache Junction?
The wettest day measured in Apache Junction between 1940 and 2025 was 5 September 1970, with 127 mm of rain in 24 hours.
What was the windiest day in Apache Junction?
The windiest day measured in Apache Junction between 1940 and 2025 was 8 April 2013, with winds reaching 39.7 km/h.
What is the warmest month in Apache Junction?
The warmest month in Apache Junction is July (31.9 °C on average); the coldest is January (9.2 °C).
How much does it rain in Apache Junction?
Apache Junction receives on average 329 mm of precipitation per year, spread over about 42 rainy days.
Is it sunny in Apache Junction?
Apache Junction gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.
What is the biggest single-day snowfall in Apache Junction?
The heaviest 24-hour snowfall measured in Apache Junction between 1940 and 2025 was 3 February 1985, with 7.1 cm.
Are there tropical nights in Apache Junction?
Yes: Apache Junction has on average 100 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Apache Junction?
In Apache Junction, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 26 June 1990, and the lowest was -15.5 °C on 23 December 1990.
Compare Apache Junction with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Apache Junction