October weather forecastMesa, AZ

October
Weather in October
As fall sweeps through Mesa, Arizona in October, the weather begins a slight shift from the intense summer towards a more comfortable climate. The reduction in daylight hours hints at the approaching winter, while the number of sunshine days remains relatively steady. In sync with the dip in temperatures, rainfall starts to marginally pick up, welcoming the city's transition to winter. In contrast to the previous months of harsh heat, October sees a fresh breeze, making the overall weather soothing. As October takes over, a significant drop in the temperatures is noted with a high of 83.8°F (28.8°C) and a low of 66°F (18.9°C).Temperature
Welcoming October, Mesa observes a shift in the average high-temperature, falling from September's very hot 95.4°F (35.2°C) to a warm 83.8°F (28.8°C). In October, the nighttime temperature in Mesa lowers to an average of 66°F (18.9°C).Humidity
The average relative humidity in October is 31%.Rainfall
In Mesa, during October, the rain falls for 3.9 days and regularly aggregates up to 0.91" (23mm) of precipitation. In Mesa, during the entire year, the rain falls for 60.2 days and collects up to 7.91" (201mm) of precipitation.Daylight
In Mesa, Arizona, the average length of the day in October is 11h and 20min.On the first day of the month, sunrise is at 6:22 am and sunset at 6:11 pm. On the last day of October, sunrise is at 6:45 am and sunset at 5:36 pm MST.
Sunshine
The average sunshine in October is 8.1h.UV index
The average daily maximum UV index in October is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 5 during October translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Mesa, AZ
- Average high temperature in October: 83.8°F
The warmest month (with the highest average high temperature) is July (101.8°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in October: 66°F
The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure in October
Mesa, AZ
- Average pressure in October: 29.92"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in October
Mesa, AZ
- Average wind speed in October: 4.9mph
The windiest months (with the highest average wind speed) are April and May (6.4mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).
Average humidity in October
Mesa, AZ
- Average humidity in October: 31%
The month with the highest relative humidity is December (44%).
The month with the lowest relative humidity is June (17%).
Average rainfall in October
Mesa, AZ
- Average rainfall in October: 0.91"
The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in October
Mesa, AZ
- Average rainfall days in October: 3.9 days
The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is June (1.2 days).
Average daylight in October /
Average sunshine in October
Mesa, AZ
- Average daylight in October: 11h and 18min
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 October: 8h and 6min
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 in October
Mesa, AZ
- Average sunshine days in October: 26.3 days
The month with the most sunshine days is May (28.4 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in October
Mesa, AZ
- Average UV index in October: 5
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 in October
Mesa, AZ
- Average cloud cover in October: 9
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in October
Mesa, AZ
- Average visibility in October: 6mi
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).





