Climate and monthly weather forecastFountain Hills, AZ
Climate and monthly weather forecast
The climate of Fountain Hills
Stationed in Arizona, USA, the town of Fountain Hills falls under the BSh Köppen climate classification, which categorizes this quaint town's climate as a subtropical steppe. Thus, the area experiences a semi-arid climate with relatively low humidity and rainfall throughout the year. The town reaps the benefits of Arizona's rather consistent and predictable weather patterns.The annual temperature range in Fountain Hills is quite broad, with the monthly average high temperature fluctuating from 61.7°F (16.5°C) in January to 99.1°F (37.3°C) in July, while the average low temperature ranges from 44.2°F (6.8°C) in December to 80.4°F (26.9°C) in August. Humidity, on the other hand, oscillates within narrow bounds from 17% in June to 46% in December. The town experiences the least amount of rainfall in May and June with 0.12" (3mm) each, while July sees the most precipitation at 1.54" (39mm).
One key characteristic of Fountain Hills' climate is its long, sunny days. Averaging from 10 hours in December to 14.4 hours in June, daylight hours generally outdo most places. In complement, the town tends to have an abundance of sunshine hours, hitting a maximum of 12.2 hours in June and a minimum of 6.8 hours in December. Despite its location in Arizona’s arid region, Fountain Hills remarkably avoids extreme weather conditions.
The best time to visit Fountain Hills
The ideal time to tour Fountain Hills would be during the late winter and early spring months, specifically February to April. During this period, the average high temperature fluctuates between 64°F (17.8°C) and 79.3°F (26.3°C) while the average low temperature ranges from 46.9°F (8.3°C) to 56.8°F (13.8°C). This offers pleasant weather conditions ideal for outdoor activities. Days tend to be longer with daylight hours oscillating from 11 to 13 hours, affording plenty of time for sightseeing. Moreover, rainfall is relatively low during these months, ranging from 0.2" (5mm) to 1.18" (30mm).The worst time to visit Fountain Hills
July and August are less ideal for visitors seeking to escape the summer heat. These months can reach hot temperatures with the average high reaching 99.1°F (37.3°C) and 98.2°F (36.8°C) respectively. While these months do offer the most extended daylight hours of 14.1 to 13.4, the discomfort of the high temperature might shadow the enjoyment of the extended daylight. Rainfall is also at its peak during July with 1.54" (39mm) of precipitation, albeit it still being relatively low.Spring weather in Fountain Hills
Spring in Fountain Hills transpires from March to May, experiencing an increasing trend in temperatures that ranges from 51.8°F (11°C) as the average low in March to 63.1°F (17.3°C) in May. Simultaneously, the town experiences an increase in daylight hours, from 12 hours in March peaking at 13.9 hours in May allowing for balmy, extended outdoor activities. Rainfall is quite low during spring, especially in April and May with less than 0.2" (5mm).Summer weather in Fountain Hills
The Summer months from June to August in Fountain Hills can reach quite high temperatures with June reaching an average high of 98.2°F (36.8°C), climbing to 99.1°F (37.3°C) in July, before a slight dip to 98.2°F (36.8°C) in August respectively. However, Fountain Hills in summer offers the longest days and hours of abundant sunshine averaging between 12 to 12.2 hours. The level of rainfall experiences an increase from 0.12" (3mm) in June to 1.54" (39mm) in July before tapering off to 1.3" (33mm) in August.Autumn weather in Fountain Hills
Autumn in Fountain Hills from September to November experiences a gentle drop in temperatures, with average high temperatures descending from 92.5°F (33.6°C) to 70.9°F (21.6°C) and low temperatures decreasing from 74.7°F (23.7°C) to 52.7°F (11.5°C). With daylight hours ranging from 11.3 to 12.4 hours, this period offers mild yet pleasurable weather for outdoor pursuits. Additionally, rainfall during this period fluctuates between 0.71" (18mm) and 1.06" (27mm).Winter weather in Fountain Hills
The winter months, from December to February, see temperatures decline further, with average high temperatures ranging from 60.3°F (15.7°C) to 64°F (17.8°C) and low temperatures plummeting from 44.2°F (6.8°C) to 46.9°F (8.3°C). Even though the days are shorter with daylight hours varying between 10 to 11 hours, the winter weather combined with the average rainfall of 0.87 to 1.18" (30mm) promises a charming and comfortable environment overall.Weather in January
Transitioning from chilly December, January in Fountain Hills, Arizona, USA, introduces the new year with slightly milder temperatures, though still presents a crisp winter touch. January hosts weather conditions bearing low relative humidity and limited rainfall, indicating a propensity for dry weather. Weather in January »Weather in February
Compared to January, the weather in February in Fountain Hills exhibits a subtle upward shift towards spring, while retaining most of its diligent winter attributes. The month appreciates more sunlight, extending the daylight by nearly an hour in comparison to January. Weather in February »Weather in March
Showing a departure from February’s climate, March weather in Fountain Hills manifests a pronounced transition towards a more spring-like atmosphere. An increase in daylight hours and continuation of dry weather reflects the onset of spring. Weather in March »Weather in April
April’s weather in Fountain Hills, Arizona, represents the true arrival of spring with conspicuous alterations in comparison to its predecessor March. The transition to warmer temperatures culminates marking the city's journey towards summer. Weather in April »Weather in May
May embodies the brisk transition from spring towards summer in Fountain Hills, depicting a noticeable shift from April. The escalation in temperatures advances rapidly throughout this month. Simultaneously, the weather retains its predominant aridity, further reducing humidity and rainfall levels. Weather in May »Weather in June
June season in Fountain Hills signals the official commencement of summer, providing a distinct departure from May. Seizing the longest daylight hours of the year, the weather prompts the city to bask under the intense summer sun. Weather in June »Weather in July
Following June’s scorching conditions, July’s weather in Fountain Hills escalates further into the heart of summer. The temperature soars, while daylight hours see a minor reduction. Humidity experiences a slight climb, coupled with a significant increase in the number of rainfall days. Weather in July »Weather in August
August in Fountain Hills brings a subtle wind-down from the high-summer conditions of July. The semblance of a warm and arid climate persistently prevails, though sunlight hours shorten slightly. Humidity remains relatively high compared to preceding months, going hand in hand with a sustaining rainfall frequency. Weather in August »Weather in September
Transitioning from August, the weather in September saturates Fountain Hills with late summer conditions. Early signs of autumn can be spotted, though summer's last vestiges persist, tempering the climate with residual warmth. Weather in September »Weather in October
Stepping away from September's late summer attributes, October in Fountain Hills provides the first authentic taste of autumn. The season brings with it a discernible shift in weather, characterised by rapidly declining temperatures. Weather in October »Weather in November
In the wake of October's mild climate, Fountain Hills greets November with a marked introduction of late autumn. With the sun dropping in prominence, daylight hours continue to decrease. Cloud cover gradually increases, though visibility remains optimal. Weather in November »Weather in December
December in Fountain Hills sees the swift entry of winter, transitioning away from the mild conditions of November. The lowest temperatures of the year, between 44.2°F (6.8°C) to 60.3°F (15.7°C), mark the arrival of the coolest month. Weather in December »Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Fountain Hills, Arizona, during the entire year, the rain falls for 67.9 days and collects up to 10" (254mm) of precipitation.
May and June are months with the least rain when the rain falls for 2.7 days and typically aggregates up to 0.12" (3mm) of rain.
June is the least humid month in Fountain Hills, Arizona, with an average relative humidity of 17%.
The month with the longest days is June, with an average of 14h and 18min of daylight.
With an average of 12.2h of sunshine, June has the most sunshine of the year.
The months with the highest UV index in Fountain Hills are June through August, with an average maximum UV index of 8.
July stands out as Fountain Hills's warmest month, with an average high-temperature of 99.1°F (37.3°C) and a low-temperature of 79.7°F (26.5°C).
The month with the most rainfall in Fountain Hills is July, when the rain falls for 12.2 days and typically aggregates up to 1.54" (39mm) of precipitation.
Fountain Hills's coldest month, December, registers temperatures that range from a high of 60.3°F (15.7°C) to a low of 44.2°F (6.8°C).
The most humid month in Fountain Hills is December, with an average relative humidity of 46%.
With an average of 10h and 0min of daylight, December has the shortest days of the year in Fountain Hills, Arizona.
Fountain Hills does not observe Daylight Saving Time (DST). MST timezone is used throughout the entire year.
December has the least sunshine of the year in Fountain Hills, with an average of 6.8h of sunshine.
December is the month with the lowest UV index in Fountain Hills, with an average maximum UV index of 3.
Average temperature
Fountain Hills, AZ
The warmest month (with the highest average high temperature) is July (99.1°F).
The month with the lowest average high temperature is December (60.3°F).
The month with the highest average low temperature is August (80.4°F).
The coldest month (with the lowest average low temperature) is December (44.2°F).
Average pressure
Fountain Hills, AZ
- Average pressure in January:
30.1"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 (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Fountain Hills, AZ
- Average wind speed in January:
5.1mph - Average wind speed in February:
5mph - Average wind speed in March:
5.6mph - Average wind speed in April:
6.5mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.9mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.2mph - Average wind speed in September:
5.3mph - Average wind speed in October:
5.2mph - Average wind speed in November:
5.2mph - Average wind speed in December:
4.8mph
The windiest months (with the highest average wind speed) are April and May (6.5mph).
The calmest month (with the lowest average wind speed) is December (4.8mph).
Average humidity
Fountain Hills, AZ
The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (17%).
Average rainfall
Fountain Hills, AZ
- Average rainfall in January:
0.87" - Average rainfall in February:
1.18" - Average rainfall in March:
0.91" - Average rainfall in April:
0.2" - Average rainfall in May:
0.12" - Average rainfall in June:
0.12"
- Average rainfall in July:
1.54" - Average rainfall in August:
1.3" - Average rainfall in September:
1.06" - Average rainfall in October:
0.98" - Average rainfall in November:
0.71" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is July (1.54").
The driest months (with the least rainfall) are May and June (0.12").
Average rainfall days
Fountain Hills, AZ
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5 days - Average rainfall days in March:
4.8 days - Average rainfall days in April:
3 days - Average rainfall days in May:
2.7 days - Average rainfall days in June:
1.6 days
- Average rainfall days in July:
12.2 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
8.2 days - Average rainfall days in October:
4.2 days - Average rainfall days in November:
3.3 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is July (12.2 days).
The month with the least rainy days is June (1.6 days).
Average daylight / Average sunshine
Fountain Hills, 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 6min - Average sunshine in February:
8h and 54min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 54min - 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 6min - 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 48min
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
Fountain Hills, AZ
- Average sunshine days in January:
24.8 days - Average sunshine days in February:
22.7 days - Average sunshine days in March:
26.9 days - Average sunshine days in April:
27.3 days - Average sunshine days in May:
28 days - Average sunshine days in June:
27.3 days
- Average sunshine days in July:
14 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
25.9 days - Average sunshine days in November:
25.8 days - Average sunshine days in December:
23.2 days
The month with the most sunshine days is May (28 days).
The month with the least sunshine days is July (14 days).
Average UV index
Fountain Hills, 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
Fountain Hills, AZ
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility
Fountain Hills, 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).
