Best time to visit Roslyn, WA

A month-by-month travel weather guide based on NOAA 30-year climate normals.

The most comfortable travel window in Roslyn runs from May through September — 5 months of pleasant temperatures and modest rainfall.

January Wet
High
35.5°F
Low
24.6°F
Precip
8.13 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 8h 41m

February Wet
High
40.1°F
Low
25.4°F
Precip
5.84 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 10h 1m

March Cool
High
46.0°F
Low
28.7°F
Precip
4.94 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 11h 39m

April Cool
High
52.5°F
Low
32.5°F
Precip
3.42 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 13h 23m

May Good
High
61.0°F
Low
39.0°F
Precip
2.21 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 53m

June Good
High
66.9°F
Low
45.1°F
Precip
1.77 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 15h 40m

July Excellent
High
75.5°F
Low
50.5°F
Precip
0.71 in

Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.

Daylight ≈ 15h 22m

August Good
High
76.1°F
Low
49.8°F
Precip
0.87 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 14h 3m

September Good
High
69.0°F
Low
43.3°F
Precip
1.88 in

Comfortable for most activities. Bring layers; nights can be cool.

Daylight ≈ 12h 19m

October Cool
High
56.0°F
Low
35.2°F
Precip
4.93 in

Mild but on the chilly side. Pack a jacket; great for hiking and city walks.

Daylight ≈ 10h 36m

November Wet
High
42.5°F
Low
29.4°F
Precip
7.77 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 9h 3m

December Wet
High
35.2°F
Low
25.0°F
Precip
7.37 in

Frequent rain. Bring waterproof gear; outdoor plans need flexibility.

Daylight ≈ 8h 17m

Looking for similar climates? See Roslyn's climate twins. Or jump straight to the full climate profile.