Nampa, ID vs Phoenix, AZ

Side-by-side comparison of monthly climate normals (NOAA 1991-2020).

Nampa is cooler than Phoenix (52°F vs 72.5°F annual avg) and similar rainfall to it (11 in vs 8.9 in per year). Nampa has a Semi-arid (cold) climate; Phoenix a Desert (hot) climate.

Nampa, ID

Annual avg
52°F
Annual precip
11 in
Warmest month
July (93.3°F)
Coldest month
December (22.8°F)
Annual swing
44.1°F
Semi-arid (cold) BSk USDA Zone 7b

Phoenix, AZ

Annual avg
72.5°F
Annual precip
8.9 in
Warmest month
July (104.0°F)
Coldest month
December (42.7°F)
Annual swing
39.1°F
Pleasant months
2 / 12
Desert (hot) BWh USDA Zone 9b

Best months to visit each city

Nampa

J
F
M
A
M
J
J
A
S
O
N
D

Phoenix

J
F
M
A
M
J
J
A
S
O
N
D

Month-by-month comparison

Month Nampa Phoenix
High Low Precip High Low Precip
January 39.5°F 23.0°F 1.37 in 65.4°F 44.1°F 1.17 in
February 47.2°F 26.0°F 1.04 in 68.1°F 46.1°F 1.21 in
March 57.4°F 31.6°F 1.26 in 75.0°F 50.9°F 1.09 in
April 64.5°F 36.1°F 1.06 in 82.5°F 56.6°F 0.35 in
May 73.9°F 44.0°F 1.37 in 91.5°F 64.7°F 0.19 in
June 82.8°F 51.0°F 0.73 in 101.5°F 72.7°F 0.03 in
July 93.3°F 57.3°F 0.26 in 104.0°F 80.8°F 0.81 in
August 91.6°F 55.5°F 0.20 in 102.5°F 80.5°F 0.96 in
September 81.0°F 46.5°F 0.36 in 97.5°F 74.7°F 0.71 in
October 66.6°F 36.5°F 0.80 in 86.3°F 62.7°F 0.67 in
November 50.7°F 28.4°F 1.17 in 74.0°F 50.8°F 0.90 in
December 40.0°F 22.8°F 1.39 in 63.9°F 42.7°F 0.81 in
Nampa overview
Full climate profile
 Phoenix overview
Full climate profile