Climate and monthly weather forecastApache Junction, AZ
Climate and monthly weather forecast
The climate of Apache Junction
Designated as a BWh, or Subtropical desert according to the Köppen climate classification, Apache Junction witnesses climate that is characterized by extremely hot and arid conditions, owing to its geographical location within the borders of Arizona, USA. The climate follows a pattern of persistent heat and minimal rainfall throughout the year, regardless of the changing seasons.A careful analysis of the climate data illustrates notable variations in atmospheric parameters. The highest temperature recorded over the year reaches 100°F (37.8°C), predominantly in the peak summer months, whereas the winter months bear witness to low temperatures that hover around 45°F (7.2°C). Rainfall is scarce, and measurements fall within a narrow window of 0.08" (2mm) to 1.34" (34mm) annually. Relative humidity levels maintain a consistent trend between 17 and 46% over the entire year. This dry atmosphere combines with the solar abundance, as is substantiated by the daylight reaching lengths of up to 14.3 hours in a day, and sunshine levels maximising at 12.2 hours per day. The UV index hits its peak value of 8 during the hottest months.
Apache Junction's climate shows interesting patterns, particularly in the degree of fluctuation in rainfall. The desert city experiences rainfall in all months, with the volume shooting up in mid-year months -- a unique climatic scenario termed as the Arizona "monsoon season."
The best time to visit Apache Junction
Visitors interested in exploring Apache Junction would find the period from March to May most welcoming. During this time, the temperature range stays between from 62.4°F (16.9°C) to 80.2°F (26.8°C), and daylight times extend to mark the onset of summer. April records the lowest rainfall for the year at only 0.2" (5mm). What enhances the outdoor experience is the 11 hours of sunshine daily.The worst time to visit Apache Junction
The peak summer months from June to August are arguably the worst time to visit Apache Junction. The life-sapping desert heat sends the mercury soaring to 100°F (37.8°C), making prolonged stays outdoors highly challenging, despite the 14.3 hours of daylight available. Moreover, the high UV index of 8 and low relative humidity level often make conditions unbearable.Spring weather in Apache Junction
Spring months in Apache Junction bring a pleasant climate change. During March to May, temperatures tend to increase from 62.4°F (16.9°C) up to 80.2°F (26.8°C). Humidity values show a decreasing trend, starting from 45% in March to 20% in May. Rainfall is scanty, with April witnessing the lowest rainfall of 0.2" (5mm). With daylight stretching up to 13 hours and sunshine of 11 hours per day in May, spring blooms in all its glory.Summer weather in Apache Junction
Summer in Apache Junction runs from June to August and is notoriously hot with temperatures flirting with the 100°F (37.8°C) mark. Relative humidity is on the lower side, averaging 17%, adding to the dry and arid conditions. Elements of relief are the long daylight hours, going up to 14.3 hours in June and sunshine maximising at 12.2 hours per day in June and August.Autumn weather in Apache Junction
Autumn encompasses the months of September to November. During this period, temperatures taper down from the summer high at 93.7°F (34.3°C) to a more manageable 71.4°F (21.9°C) by November. Relative humidity remains around 33% in September, increasing to 35% by November. Meanwhile, sunshine hours decrease from summer, remaining around 7.3 hours by November.Winter weather in Apache Junction
Winters in Apache Junction are relatively mild with temperatures ranging from 61.2°F (16.2°C) to 45°F (7.2°C) across December, January, and February. Despite the chilling temperatures, the region continues to receive 6.7 hours of sunshine. Rainfall in winter months also stays within moderate levels, with December receiving around 0.98" (25mm). Observing a sharp increase, the relative humidity during this period oscillates around 46%. Overall, the winter season witnesses calmer and more manageable weather conditions compared to the scorching summers.Weather in January
Apache Junction, Arizona, witnesses a modest chill in January, yet it remains inviting to comfort seekers who desire a mild winter. Comparing to December, temperatures rise subtly, providing a cooler yet pleasant outlook. However, outdoor activities are best scheduled during midday rather than late evening to avoid the temperature drop. Weather in January »Weather in February
In February, the transition from winter to spring starts to manifest in Apache Junction. Visitors tend to roll in to enjoy the soft play of temperatures before the high Arizona summer. Comparatively, the weather leans toward the warmer side compared to January. Weather in February »Weather in March
The hallmarks of March weather in Apache Junction include warmer days and clear skies compared to February. This month witnesses a gradual increase in daytime length, making way for more outdoor activities. The rainfall is less frequent, and with visibility up to 6 miles, it’s an opportune time for sightseeing and capturing the natural beauty of the surroundings. Weather in March »Weather in April
Migration towards summer becomes evident in Apache Junction come April. The comfortable chill of the previous months transgresses into a warm ambiance, quite different from March. With this warmer trend, one can witness the city's shift from spring to the doorstep of summer. Weather in April »Weather in May
In May, Apache Junction is painted in an authentic Arizonian summer. Visitors will notice a substantial change in the temperature frame compared to April, which inclines more towards the hotter side. Sunlight floods the day, and cloud cover is lowest compared to previous months, signifying bright and scorching days. Weather in May »Weather in June
The essence of the Apache Junction summer is exemplified by June's weather. A noticeable increase in temperature is seen from May. The city gleams under the plentiful Arizona sunshine, bestowed through longer days and higher UV index values. Weather in June »Weather in July
July in Apache Junction brings in the peak of summer with maximum temperatures reaching a scorching 100°F (37.8°C). This is a stark contrast to the weather experienced in June. Rainy days spike in this month, providing much-needed relief from the relentless shine. Weather in July »Weather in August
Apache Junction in August holds steady, reflecting the weather patterns seen in the scorching July. However, the summertime spell continues unabated, with average high temperatures subtly below the record set in July. Days remain extensively sunny, upholding the city's trademark summer weather. Weather in August »Weather in September
September is the gateway to Apache Junction's transition from the blazing summer to mildly nippy autumn. Compared to August, a drop in temperatures is observable, signaling an onset of the cooling trend. The rainfall dips gradually, and the summer's saturated colors start fading into the pleasant aesthetic of fall. Weather in September »Weather in October
October in Apache Junction is characterized by the emergence of fall. The blazing heat of September subsides considerably, resulting in a more pleasant climate. The falling leaves paint a picturesque landscape, inviting visitors for sightseeing and hikes in the cooler weather. Weather in October »Weather in November
The onset of winter in November marks the introduction of cooler weather in Apache Junction. Delving further from October, the city experiences more pronounced changes in temperature. It's the time when fall begins to blend with winter, bringing in a chilly wind that breathes life into the city's atmosphere. Weather in November »Weather in December
December solidifies Apache Junction's descent into its winter season. A noticeable drop in temperature from November, paints a wintertime portrait that's uniquely Arizonian. The sunlit hours shorten, giving way to crisp, starry nights, while the frequency of rainfall slightly heightens. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Apache Junction, AZ
The warmest month (with the highest average high temperature) is July (100°F).
The month with the lowest average high temperature is December (61.2°F).
The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure
Apache Junction, AZ
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.98"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.85"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.93"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Apache Junction, AZ
- Average wind speed in January:
5.3mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.7mph - Average wind speed in April:
6.7mph - Average wind speed in May:
6.8mph - Average wind speed in June:
6.2mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.3mph - Average wind speed in September:
5.5mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.5mph - Average wind speed in December:
5mph
The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is December (5mph).
Average humidity
Apache Junction, AZ
The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (17%).
Average rainfall
Apache Junction, AZ
- Average rainfall in January:
0.83" - Average rainfall in February:
1.1" - Average rainfall in March:
0.83" - Average rainfall in April:
0.2" - Average rainfall in May:
0.16" - Average rainfall in June:
0.08"
- Average rainfall in July:
1.34" - Average rainfall in August:
1.1" - Average rainfall in September:
1.02" - Average rainfall in October:
0.83" - Average rainfall in November:
0.75" - Average rainfall in December:
0.98"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Apache Junction, AZ
- Average rainfall days in January:
4.6 days - Average rainfall days in February:
4.4 days - Average rainfall days in March:
3.3 days - Average rainfall days in April:
2.7 days - Average rainfall days in May:
2.3 days - Average rainfall days in June:
1.4 days
- Average rainfall days in July:
10.1 days - Average rainfall days in August:
9.3 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
3.9 days - Average rainfall days in November:
3.4 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is July (10.1 days).
The month with the least rainy days is June (1.4 days).
Average daylight / Average sunshine
Apache Junction, AZ
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
10h and 0min
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).
- Average sunshine in January:
7h and 0min - Average sunshine in February:
8h and 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 54min - Average sunshine in June:
12h and 12min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 12min - Average sunshine in September:
9h and 36min - Average sunshine in October:
8h and 0min - Average sunshine in November:
7h and 18min - Average sunshine in December:
6h and 42min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
Apache Junction, AZ
- Average sunshine days in January:
25.8 days - Average sunshine days in February:
23.6 days - Average sunshine days in March:
27.8 days - Average sunshine days in April:
27.4 days - Average sunshine days in May:
28.4 days - Average sunshine days in June:
27.9 days
- Average sunshine days in July:
17.3 days - Average sunshine days in August:
18.7 days - Average sunshine days in September:
20.8 days - Average sunshine days in October:
26.5 days - Average sunshine days in November:
26.2 days - Average sunshine days in December:
24 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.3 days).
Average UV index
Apache Junction, AZ
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Apache Junction, AZ
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility
Apache Junction, 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).








