Best time to visit Duncan, OK
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Duncan runs from September through November — 3 months of pleasant temperatures and modest rainfall.
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 9h 56m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 10h 45m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 11h 47m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 52m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 13h 48m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 14h 16m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 14h 6m
Summer heat. Avoid midday exertion; aim for morning and evening activities.
Daylight ≈ 13h 18m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 12m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 11h 7m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 10m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 9h 42m
Looking for similar climates? See Duncan's climate twins. Or jump straight to the full climate profile.