As of 04:15 MST

Surprise, AZ weather in September

90°

Surprise, Sunday, 9 August, 04:15

Overcast. Feels like 90°. High 113°, low 90°.

Pressure29.83 inHg

Wind3 mph NW

Humidity41%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

In September, Surprise, AZ averages a high of 95.7° and a low of 73°. About 1.0 inches of precipitation fall over the month (3 wet days). The record high is 111.9° (2020) and the record low 51.8° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	99.3°	78.6°	15%	108.5° (1982)	65.8° (1992)
2	99.3°	78.3°	10%	108.1° (1982)	65.7° (1992)
3	100°	77.9°	7%	108° (2020)	66.9° (1999)
4	99.3°	77.4°	18%	110.3° (2020)	65.1° (1961)
5	98.6°	77.4°	22%	111.9° (2020)	61.3° (1992)
6	98.4°	77.2°	10%	110.8° (2020)	63.9° (1970)
7	98.6°	76.8°	15%	108.1° (2021)	65.1° (1970)
8	98.2°	76.5°	12%	107.1° (2023)	67.5° (1965)
9	97.3°	75.6°	13%	108.7° (2023)	65.8° (2020)
10	96.6°	75.6°	20%	109.6° (2023)	67.8° (1985)
11	96.3°	74.7°	18%	109.2° (1990)	61.5° (1986)
12	96.4°	73.4°	7%	106.9° (1971)	55.8° (1985)
13	95.7°	72.9°	10%	106.5° (2021)	61.2° (1985)
14	95.4°	72.7°	10%	107.8° (2000)	61.9° (1982)
15	95.4°	72.5°	7%	106.2° (1971)	59.4° (1970)
16	95.5°	72.5°	3%	105.6° (2020)	59.9° (1970)
17	95°	72.5°	5%	106.5° (1962)	60.1° (1970)
18	94.8°	71.4°	8%	105.4° (1962)	62.2° (1977)
19	94.3°	70.9°	13%	106.3° (1962)	57.6° (1965)
20	94.1°	70.5°	8%	103.1° (2010)	52.3° (1965)
21	94.1°	70.3°	5%	101.8° (2009)	51.8° (1965)
22	93°	70.7°	10%	103.5° (2003)	55° (1965)
23	92.7°	69.6°	12%	102.9° (2001)	58.1° (2004)
24	93°	69.4°	10%	102.9° (2020)	52.7° (1986)
25	93.9°	70°	10%	105.4° (2024)	58.5° (2007)
26	93.4°	70°	12%	103.5° (2024)	57.9° (1986)
27	93°	69.4°	8%	107.4° (2024)	54.9° (1986)
28	93°	68.9°	7%	110.8° (2024)	59° (2013)
29	92.8°	68.7°	5%	108.3° (2024)	54° (1986)
30	92.7°	68°	5%	103.8° (2024)	55.9° (1986)