St. Helena, NE vs Phoenix, AZ

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

St. Helena is cooler than Phoenix (48.7°F vs 72.5°F annual avg) and wetter than it (28.7 in vs 8.9 in per year). St. Helena has a Hot-summer humid continental climate; Phoenix a Desert (hot) climate.

St. Helena, NE

Annual avg
48.7°F
Annual precip
28.7 in
Warmest month
July (87.1°F)
Coldest month
January (10.4°F)
Annual swing
55.2°F
Pleasant months
1 / 12
Hot-summer humid continental Dfa USDA Zone 6b

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

St. Helena

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 St. Helena Phoenix
High Low Precip High Low Precip
January 30.0°F 10.4°F 0.65 in 65.4°F 44.1°F 1.17 in
February 34.9°F 14.2°F 0.91 in 68.1°F 46.1°F 1.21 in
March 47.1°F 24.6°F 1.60 in 75.0°F 50.9°F 1.09 in
April 60.0°F 35.4°F 3.36 in 82.5°F 56.6°F 0.35 in
May 71.9°F 47.7°F 3.68 in 91.5°F 64.7°F 0.19 in
June 82.4°F 58.9°F 4.03 in 101.5°F 72.7°F 0.03 in
July 87.1°F 63.8°F 3.46 in 104.0°F 80.8°F 0.81 in
August 84.8°F 61.5°F 3.26 in 102.5°F 80.5°F 0.96 in
September 77.5°F 52.1°F 2.85 in 97.5°F 74.7°F 0.71 in
October 63.3°F 38.5°F 2.56 in 86.3°F 62.7°F 0.67 in
November 47.2°F 25.3°F 1.27 in 74.0°F 50.8°F 0.90 in
December 34.0°F 14.9°F 1.03 in 63.9°F 42.7°F 0.81 in
St. Helena overview
Full climate profile
 Phoenix overview
Full climate profile