Marana climate — normals and trends
Marana (United States) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 21.1 °C and it receives 250 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 (31.6 °C on average) and the coldest is January (10.5 °C). Rainfall peaks in August.
Marana averages 7 frost days, 166 hot days (≥ 30 °C) and 43 rainy days per year.
Marana has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 13 to 1 per year over the period.
The hottest day of the period reached 45.7 °C (on 26 June 1990) and the coldest -10.8 °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
MaranaArizona
- coords
- 32.44°, -111.23°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.1°C
Average daily high
27.7°C
Average daily low
14.5°C
Annual rainfall
250mm
Sunshine / day
11.3h
Mean relative humidity
36%
Average peak wind
15.9km/h
Seasonal range
21.1°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
166 d/yr
Rainy days (≥ 1 mm)
43 d/yr
Annual snowfall
1.0 cm
Average feels-like high
25.6 °C
Average feels-like low
12.1 °C
Average peak gust
31.9 km/h
Tropical nights (≥ 20 °C)
116 d/yr
Solar radiation
21.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.72 · 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
45.7 °C
26 June 1990
Coldest day
-10.8 °C
23 December 1990
Wettest day
52 mm
23 August 1992
Windiest day
50.1 km/h
25 October 1996
Strongest gust
100.8 km/h
11 March 2006
Hottest feels-like
45.5 °C
26 June 1990
Coldest feels-like
-15.8 °C
23 December 1990
Snowiest day
3.8 cm
24 December 1987
Sunniest day
14.0 h
22 June 1951
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 | 17.5 °C | +0.2 °C | 2 mm | -28 mm |
| Feb | 23.9 °C | +4.5 °C | 0 mm | -25 mm |
| Mar | 24.0 °C | +1.6 °C | 29 mm | +7 mm |
| Apr | 27.8 °C | +0.7 °C | 2 mm | -6 mm |
| May | 32.3 °C | +0.4 °C | 2 mm | -1 mm |
| Jun | 38.5 °C | +1.3 °C | 7 mm | +4 mm |
| Jul | 38.4 °C | +0.9 °C | 23 mm | -6 mm |
| Aug | 39.2 °C | +2.9 °C | 8 mm | -30 mm |
| Sep | 34.9 °C | +0.4 °C | 40 mm | +16 mm |
| Oct | 30.1 °C | +1.1 °C | 36 mm | +18 mm |
| Nov | 24.9 °C | +2.6 °C | 38 mm | +20 mm |
| Dec | 22.7 °C | +5.0 °C | 4 mm | -29 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 Marana?
Marana has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 21.1 °C and it receives 250 mm of precipitation per year.
What is the hottest day ever recorded in Marana?
The hottest day measured in Marana between 1940 and 2025 was 26 June 1990, reaching 45.7 °C.
What is the coldest day in Marana?
The coldest day measured in Marana between 1940 and 2025 was 23 December 1990, at -10.8 °C.
Does it snow in Marana?
Almost never: Marana sees virtually no snow, with about 7 frost days per year.
Has the climate of Marana warmed?
Yes: Marana warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Marana?
The wettest day measured in Marana between 1940 and 2025 was 23 August 1992, with 52 mm of rain in 24 hours.
What was the windiest day in Marana?
The windiest day measured in Marana between 1940 and 2025 was 25 October 1996, with winds reaching 50.1 km/h.
What is the warmest month in Marana?
The warmest month in Marana is July (31.6 °C on average); the coldest is January (10.5 °C).
How much does it rain in Marana?
Marana receives on average 250 mm of precipitation per year, spread over about 43 rainy days.
Is it sunny in Marana?
Marana gets on average 11.3 hours of sunshine per day, roughly 4,125 hours per year over 1940-2025.
What is the biggest single-day snowfall in Marana?
The heaviest 24-hour snowfall measured in Marana between 1940 and 2025 was 24 December 1987, with 3.8 cm.
Are there tropical nights in Marana?
Yes: Marana has on average 116 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Marana?
In Marana, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 26 June 1990, and the lowest was -15.8 °C on 23 December 1990.
Compare Marana with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Marana