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Duncan, United States Snapshot 2026
Where is Duncan?
Duncan, United States
- Continent
- Americas
- Country
- United States
- City
- Duncan
- Population
- 23.2K
- Elevation
- 342 m
- Coordinates
- 34.50°, -97.96°
Duncan is a city in United States with a population of approximately 23.2K. Average temperatures range from 1°C (34°F) in January to 36°C (96°F) in July. The best time to visit is April, May, September, October, November. The city sits at an elevation of 342 m above sea level.
Time in Duncan right now
Open full time & time zone page 16:55 55
Monday, June 15, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Duncan
Daylight in Duncan today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 27m
Climate normals for Duncan
Long-term monthly averages based on historical data.
January
Poor 
February
Fair March
Good April best
Excellent May best
Excellent June
Fair July
Fair August
Fair September best
Excellent October best
Excellent November best
Excellent December
Fair | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 12°C / 1°C | 8°C / -3°C | 5days (40 mm) Good | 7.5h Good | 61% Muggy | 3.5 Moderate | Poor | View Details |
| February | 15°C / 3°C | 11°C / -2°C | 6days (48 mm) Good | 7.8h Good | 61% Muggy | 4.5 Moderate | Fair | View Details |
| March | 21°C / 9°C | 18°C / 5°C | 8days (86 mm) Wet | 9.1h Good | 58% Moderate | 5.9 High | Good | View Details |
| April best | 24°C / 12°C | 22°C / 10°C | 8days (131 mm) Wet | 9.7h Good | 60% Moderate | 6.5 High | Excellent | View Details |
| May best | 28°C / 18°C | 29°C / 17°C | 11days (128 mm) Wet | 10.4h Excellent | 67% Muggy | 7.5 Very High | Excellent | View Details |
| June | 33°C / 23°C | 35°C / 24°C | 7days (56 mm) Good | 12.1h Excellent | 63% Muggy | 8 Very High | Fair | View Details |
| July | 36°C / 25°C | 38°C / 27°C | 5days (36 mm) Good | 12.6h Excellent | 55% Moderate | 8 Very High | Fair | View Details |
| August | 35°C / 25°C | 37°C / 27°C | 6days (47 mm) Good | 11.8h Excellent | 54% Moderate | 7.7 Very High | Fair | View Details |
| September best | 31°C / 21°C | 33°C / 22°C | 6days (66 mm) Good | 10.1h Excellent | 58% Moderate | 6.6 High | Excellent | View Details |
| October best | 25°C / 15°C | 24°C / 13°C | 7days (87 mm) Good | 9.1h Good | 57% Moderate | 5.3 High | Excellent | View Details |
| November best | 18°C / 8°C | 16°C / 5°C | 5days (45 mm) Good | 7.7h Good | 64% Muggy | 3.9 Moderate | Excellent | View Details |
| December | 14°C / 4°C | 11°C / 0°C | 4days (36 mm) Good | 7.3h Good | 62% Muggy | 3.3 Moderate | Fair | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 12°C / 1°C . Feb: 15°C / 3°C . Mar: 21°C / 9°C . Apr: 24°C / 12°C . May: 28°C / 18°C . Jun: 33°C / 23°C . Jul: 36°C / 25°C . Aug: 35°C / 25°C . Sep: 31°C / 21°C . Oct: 25°C / 15°C . Nov: 18°C / 8°C . Dec: 14°C / 4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 40 mm. Feb: 48 mm. Mar: 86 mm. Apr: 131 mm. May: 128 mm. Jun: 56 mm. Jul: 36 mm. Aug: 47 mm. Sep: 66 mm. Oct: 87 mm. Nov: 45 mm. Dec: 36 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 61%. Feb: 61%. Mar: 58%. Apr: 60%. May: 67%. Jun: 63%. Jul: 55%. Aug: 54%. Sep: 58%. Oct: 57%. Nov: 64%. Dec: 62%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 23 km/h . Apr: 24 km/h . May: 21 km/h . Jun: 19 km/h . Jul: 17 km/h . Aug: 17 km/h . Sep: 17 km/h . Oct: 20 km/h . Nov: 20 km/h . Dec: 20 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Frequently Asked Questions
Duncan has a population of approximately 23.2K.
The best months to visit Duncan are April, May, September, October, November, when temperatures are pleasant and rainfall is lower.
Duncan receives approximately 806mm of rainfall annually across 78 rainy days.
Duncan is located in United States, in the Americas region.
Duncan sits at an elevation of 342 m (1,122 ft) above sea level.