Broomfield, CO vs Seattle, WA

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

Broomfield is about the same temperature as Seattle (52.4°F vs 53.8°F annual avg) and drier than it (14.5 in vs 36.5 in per year). Broomfield has a Semi-arid (cold) climate; Seattle a Warm-summer Mediterranean climate.

Broomfield, CO

Annual avg
52.4°F
Annual precip
14.5 in
Warmest month
July (91.1°F)
Coldest month
January (19.0°F)
Annual swing
41.7°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

Broomfield

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 Broomfield Seattle
High Low Precip High Low Precip
January 48.0°F 19.0°F 0.45 in 48.6°F 36.8°F 5.21 in
February 49.6°F 20.3°F 0.54 in 50.7°F 36.8°F 3.71 in
March 57.7°F 28.4°F 1.21 in 54.8°F 39.4°F 3.94 in
April 63.9°F 35.1°F 1.94 in 59.8°F 43.6°F 2.89 in
May 72.3°F 44.4°F 2.35 in 66.5°F 49.3°F 1.98 in
June 85.3°F 53.4°F 1.50 in 71.2°F 54.0°F 1.22 in
July 91.1°F 58.9°F 1.73 in 77.3°F 57.5°F 0.56 in
August 88.9°F 57.2°F 1.32 in 77.4°F 58.1°F 0.83 in
September 81.5°F 48.9°F 1.19 in 71.7°F 53.9°F 1.37 in
October 67.2°F 36.8°F 1.07 in 61.0°F 46.4°F 3.49 in
November 55.8°F 26.8°F 0.73 in 53.0°F 39.9°F 5.80 in
December 47.5°F 19.1°F 0.48 in 47.8°F 36.2°F 5.49 in
Broomfield overview
Full climate profile
 Seattle overview
Full climate profile