Black Diamond, WA vs Phoenix, AZ

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

Black Diamond is cooler than Phoenix (50.5°F vs 72.5°F annual avg) and wetter than it (59.7 in vs 8.9 in per year). Black Diamond has a Oceanic climate; Phoenix a Desert (hot) climate.

Black Diamond, WA

Annual avg
50.5°F
Annual precip
59.7 in
Warmest month
August (77.3°F)
Coldest month
December (32.3°F)
Annual swing
26°F
Pleasant months
2 / 12
Oceanic Cfb USDA Zone 8b

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

Black Diamond

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 Black Diamond Phoenix
High Low Precip High Low Precip
January 45.7°F 33.0°F 7.99 in 65.4°F 44.1°F 1.17 in
February 48.9°F 32.8°F 5.44 in 68.1°F 46.1°F 1.21 in
March 53.3°F 34.7°F 6.19 in 75.0°F 50.9°F 1.09 in
April 58.6°F 38.5°F 5.55 in 82.5°F 56.6°F 0.35 in
May 65.9°F 43.9°F 3.87 in 91.5°F 64.7°F 0.19 in
June 70.3°F 48.2°F 3.15 in 101.5°F 72.7°F 0.03 in
July 77.0°F 51.4°F 1.29 in 104.0°F 80.8°F 0.81 in
August 77.3°F 51.5°F 1.64 in 102.5°F 80.5°F 0.96 in
September 70.6°F 46.9°F 2.83 in 97.5°F 74.7°F 0.71 in
October 59.5°F 41.2°F 5.76 in 86.3°F 62.7°F 0.67 in
November 49.9°F 35.7°F 8.51 in 74.0°F 50.8°F 0.90 in
December 44.5°F 32.3°F 7.46 in 63.9°F 42.7°F 0.81 in
Black Diamond overview
Full climate profile
 Phoenix overview
Full climate profile