Castleford, ID vs Seattle, WA

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

Castleford is cooler than Seattle (48.1°F vs 53.8°F annual avg) and drier than it (10.7 in vs 36.5 in per year). Castleford has a Semi-arid (cold) climate; Seattle a Warm-summer Mediterranean climate.

Castleford, ID

Annual avg
48.1°F
Annual precip
10.7 in
Warmest month
July (87.9°F)
Coldest month
December (19.2°F)
Annual swing
43.6°F
Semi-arid (cold) BSk USDA Zone 7a

Seattle, WA

Annual avg
53.8°F
Annual precip
36.5 in
Warmest month
August (77.4°F)
Coldest month
December (36.2°F)
Annual swing
25.8°F
Pleasant months
4 / 12
Warm-summer Mediterranean Csb USDA Zone 9a

Best months to visit each city

Castleford

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

Seattle

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

Month-by-month comparison

Month Castleford Seattle
High Low Precip High Low Precip
January 36.1°F 20.3°F 1.22 in 48.6°F 36.8°F 5.21 in
February 42.1°F 23.1°F 1.05 in 50.7°F 36.8°F 3.71 in
March 52.9°F 28.3°F 0.96 in 54.8°F 39.4°F 3.94 in
April 60.1°F 32.9°F 1.21 in 59.8°F 43.6°F 2.89 in
May 69.5°F 40.6°F 1.43 in 66.5°F 49.3°F 1.98 in
June 78.4°F 47.1°F 0.75 in 71.2°F 54.0°F 1.22 in
July 87.9°F 53.8°F 0.24 in 77.3°F 57.5°F 0.56 in
August 85.9°F 51.9°F 0.34 in 77.4°F 58.1°F 0.83 in
September 76.3°F 44.2°F 0.50 in 71.7°F 53.9°F 1.37 in
October 62.0°F 34.8°F 0.78 in 61.0°F 46.4°F 3.49 in
November 46.5°F 25.6°F 0.94 in 53.0°F 39.9°F 5.80 in
December 35.3°F 19.2°F 1.30 in 47.8°F 36.2°F 5.49 in
Castleford overview
Full climate profile
 Seattle overview
Full climate profile