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Marana weather

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Marana weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Marana…

Marana weather in numbers

measured normals and 10 years of recorded weather

Marana swings 61°F across the year, from 100°F highs in June to 39°F lows in December, and August is usually the wettest month in a year that brings about 11 in of precipitation. Over 10 years of recorded weather it averages 242 days a year at 77°F or above, 184 of them at 86°F or above, 4 frost nights, and rain on 40 days.

Warmest month
June
100°F average high
Coldest month
December
39°F average low
Wettest month
August
11 in a year
Comfortable
4 months
January, February, March and November
Residents
41,000
share this forecast
Most accurate here
European
94/100 CheckWeather Score
Warm days
242 days
a year at 77°F or above
Frost nights
4 nights
a year below 32°F
Rain days
40 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Marana’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

NWS, American, European side by side around Marana and nearby towns.Live rain radar →
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Marana hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Marana 10-day forecast, out to 14 days

where the models agree, and where they split

Marana, Arizona (AZ) is at its warmest in Jun (average highs near 100°F) and coldest in Dec (lows around 39°F), with roughly 11 in of precipitation across the year. Below, compare what NWS, American, European forecast for Marana right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Marana climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
64°
43°
Feb
67°
45°
Mar
73°
50°
Apr
83°
55°
May
91°
64°
Jun
100°
73°
Jul
100°
76°
Aug
98°
76°
Sep
95°
70°
Oct
85°
59°
Nov
73°
48°
Dec
64°
39°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Marana has changed since 1995

Marana sits in the same roughly 50 km square of NASA's reanalysis as Casas Adobes. That square ran 1.9°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Casas Adobes page.

Which forecast is most accurate in Marana?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
94
/100rank #1
94±0.6°F94±1.8 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
77
/100rank #2
86±1.4°F90±3.0 mph5877% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Marana today?
On this page we show what NWS, American, European each forecast for Marana today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Marana today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Marana and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Marana?
Over the last 30 days, the European model has been the most accurate for Marana (CheckWeather Score 94/100), ahead of the American at 77. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Marana?
June is typically the warmest month in Marana, with average highs around 100°F.
How cold does Marana get?
The coldest month in Marana is December, when overnight lows average about 39°F.
How much rain does Marana get?
Marana sees roughly 11 in of precipitation a year, with August usually the wettest month.

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