Climate and monthly weather forecast
Peoria, AZ


The climate of Peoria

Identified by the Köppen climate classification as a BSh or subtropical steppe, Peoria, Arizona boasts of a weather system marked by high temperatures and low humidity. Nestled in the semi-arid region of the US Southwest, this town experiences warm summers and mild winters.

A closer look at its climatological data reveals that temperatures vary widely over the course of a year. January, the coldest month, sees average highs and lows between 61.9°F and 46.8°F. The mercury then steadily rises, peaking in July with averages from 101.8°F to 82.8°F. This high, however, doesn't persist for long, as the temperature starts to dwindle in the subsequent months, reaching the initial range by December.

Year-round, relative humidity hovers around 30%, dipping to a minimum of 17% in June, and reaching a maximum of 43% in December. The annual rainfall is distributed sporadically, with the driest period occurring from May to June, where rainfall dips below 0.2" and wettest days seldom exceed a single day. Contrastingly, the wettest period occurs from July to September, receiving more than an inch of rainfall each month and experiencing up to 10 rainfall days.

Sunshine is a regular feature of Peoria's climate. On average, the town enjoys over 7 hours of sunshine per day, peaking at around 12 hours in the summer months. Cloud cover is minimal, generally remaining below 15%.

The best time to visit Peoria

Although Peoria offers climatic comfort for most of the year, the green light for an optimum travel experience is usually between March and May. During this time, the average temperature ranges from 74.8°F to 82°F during the day, and the nightly low ranges from 54.5°F to 59.7°F. The relative humidity of approximately 26% allows for comfortable outdoor activities. Rainfall is scarce, with less than an inch each month. Daylight spans 12 to13 hours, assuring longer days to explore Peoria's attractions.

The worst time to visit Peoria

Peoria's weather presents some challenges for outdoor exploration during summer (June to August), and it might be less than ideal for visitors unaccustomed to high temperatures. Daytime temperatures soar above 100°F, occasionally reaching 101.8°F in July, and the nighttime doesn't offer much relief with lows remaining in the 70s°F. Despite the high temperatures, rainfall rarely exceeds an inch, with exceptionally low humidity.

Spring weather in Peoria

Spring in Peoria is mild and comfortable. From March to May, temperatures tend to increase from an average high of 74.8°F to 89.2°F, offering pleasant warmth rather than stifling heat. Simultaneously, the average low moves between 54.5°F and 66°F. Rain is minimal, with monthly averages not exceeding 0.75". The daylight hours increase, offering up to 10.8 hours of sunshine per day.

Summer weather in Peoria

Summers in Peoria are long, hot, and arid. The season begins in June and extends until August, with July being the peak. Temperatures reach up to 100°F, and the heat persists even at night, with lows above 74.8°F. Rainfall is minimal, although humidity spikes slightly in comparison to other months.

Autumn weather in Peoria

Autumn brings cooler temperatures and increased rainfall. From September to November, temperatures decline from 95°F to 72.7°F, with lows between 77.4°F and 55.4°F. This season witnesses the highest rainfall, with precipitation levels above 1 inch.

Winter weather in Peoria

Winters in Peoria are quite mild compared to other regions. The season lasts from December through to February with temperatures ranging from 61.9°F to 66.4°F during the day and nighttime temperatures falling between 46.8°F to 48.9°F. Rainfall averages less than 0.8" each month, and relative humidity is at its peak during these months.

Weather in January

January in Peoria offers a refreshing start to the New Year, with mild temperatures and lowered humidity. The cool weather and infrequent rainfall encourage more outdoor activities, although the occasional raincoat might be needed for the 0.67" of precipitation spread over approximately four days. Weather in January »

Weather in February

February marks a period of slight transition in Peoria's climate as winter slowly bids adieu. A small increase in the monthly average temperature, a light uptick in rain, and a broader daylight span are all integral features of this month. Weather in February »

Weather in March

Peoria transitions into spring during March, with warmer days on the horizon. This is when the city begins to trade cool breezes for more thermally comforting weather, making it a favorable time for enjoying outdoor recreational activities. Weather in March »

Weather in April

April in Peoria greets residents with the emergence of clear, sunny days conducive to a multitude of outdoor activities. This month marks a further increase in temperature, reaffirming the arrival of spring. A significant drop in rainfall from March, resulting in just 0.16" of rainfall over an average of three days, prompts nature enthusiasts to indulge in their favorite pursuits. Weather in April »

Weather in May

As Peoria steps into May, summer's playful carefreeness begins to permeate the environment. The frequency of sunlight-soaked days showcases the changing landscape due to the warming temperatures. The scorching sun, coupled with only 0.12" of rainfall on average, demands a shift from spring's mild hues to summer's dramatic color palette. Weather in May »

Weather in June

June in Peoria marks the prolific onset of summer, transforming the city into a quintessential warm-weather destination. Spectacular sunny skies augment the visually appealing cityscape, drawing residents and tourists to the great outdoors, despite the sharp increase in temperature. Weather in June »

Weather in July

July, termed as the peak of summer in Peoria, is filled with long, sun-soaked days with a few splashes of cooling rain. The elevated temperature is accompanied by the number of daylight hours reaching its apex for the year, making it a season of prolonged outdoor fun. Weather in July »

Weather in August

August brings continuity to Peoria's sweltering summer days coupled with impressive levels of sunshine. The city's weather pattern encompasses high-temperature days punctuated by short spats of rain. Unlike the previous month, August encounters rainfall on ten days spread throughout the month, amounting to 1.18" on average. Weather in August »

Weather in September

As September rolls into Peoria, summer's intensity begins to soften, paving the way for autumn's arrival. Noteworthy changes in weather pattern emerge, especially regarding a reduction in daylight hours and light changes in temperature. Weather in September »

Weather in October

October in Peoria introduces the cool, balmy ambiance of fall, offering a pleasant contrast to the preceding high-temperature months. The shift manifests itself in the form of falling leaves, vibrant foliage, and moderate weather, straddling between the warmth of summer and winter's chill. Weather in October »

Weather in November

As November transitions Peoria into winter, the change in weather is characterized by a soothing decrease in temperature, reduced daylight hours, and subtler hues in the environment. The scattered showers spread over three days, amounting to 0.63" on average, complement the cool weather, providing a clean and fresh aesthetic to the surroundings. Weather in November »

Weather in December

Peoria welcomes December with a vibrant festive mood, amplified by the onset of winter chill, lowered temperatures, and the encroaching holiday cheer. While the month is visually stunning, with twinkling holiday lights accentuating the decreased daylight hours, a light increase in pressure marks the arrival of frosty weather. Weather in December »


How much does it rain in Peoria?

In Peoria, Arizona, during the entire year, the rain falls for 59.7 days and collects up to 8.23" of precipitation.

What is the least humid month in Peoria?

The least humid month is June, with an average relative humidity of 17%.

What is the driest month in Peoria?

The month with the least rainfall in Peoria is June, when the rain falls for 1.1 days and typically collects 0.08" of precipitation.

When are the longest days in Peoria?

June has the longest days of the year in Peoria, Arizona, with an average of 14h and 18min of daylight.

What month has the most sunshine in Peoria?

June has the most sunshine of the year in Peoria, Arizona, with an average of 12.2h of sunshine.

What is the month with the highest UV index in Peoria?

The months with the highest UV index are June through August, with an average maximum UV index of 8.

What is the hottest time of year in Peoria?

July, with an average high of 101.8°F and a low of 82.8°F, signifies the warmest month of the year.

What is the wettest month in Peoria?

August is the month with the most rainfall. Rain falls for 10.1 days and accumulates 1.18" of precipitation.

What are the coldest months in Peoria?

In Peoria, December registers the lowest temperatures, averaging 61.9°F at the peak and 46.8°F at the lowest.

What is the most humid month in Peoria?

December is the most humid month, with an average relative humidity of 43%.

What is the month with the shortest days in Peoria?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

Is there Daylight Saving Time (DST) in Peoria?

Peoria, Arizona, does not observe Daylight Saving Time (DST). MST timezone is used throughout the entire year.

What is the month with the least sunshine in Peoria?

With an average of 6.8h of sunshine, December has the least sunshine of the year in Peoria.

What is the month with the lowest UV index in Peoria?

With an average maximum UV index of 3, December is the month with the lowest UV index in Peoria, Arizona.

Average temperature
Peoria, AZ

Average temperature - Peoria, AZ

The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (61.9°F).

The month with the highest average low temperature is August (83.7°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).


Average pressure
Peoria, AZ

Average pressure - Peoria, AZ

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).


Average wind speed
Peoria, AZ

Average wind speed - Peoria, AZ

The windiest months (with the highest average wind speed) are April and May (6.6mph).
The calmest month (with the lowest average wind speed) is December (4.6mph).


Average rainfall
Peoria, AZ

Average rainfall - Peoria, AZ

The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is June (0.08").


Average rainfall days
Peoria, AZ

Average rainfall days - Peoria, AZ

The month with the highest number of rainy days is July (10.7 days).
The month with the least rainy days is June (1.1 days).


Average daylight / Average sunshine
Peoria, AZ

Average daylight / Average sunshine - Peoria, AZ

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).


Average sunshine days
Peoria, AZ

Average sunshine days - Peoria, AZ

The month with the most sunshine days is May (28.6 days).
The month with the least sunshine days is August (15.9 days).


Average visibility
Peoria, AZ

Average visibility - Peoria, AZ

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).


Peoria, Arizona, USA

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