Fort Supply, OK
Full City Profile · Oklahoma · Harper County County
3.7
/5.0
B+
Good
306
Population
1,391/sq mi density
$61,250
Median Income
$32,008 per capita
$97,300
Home Value
$75,277 Zillow
$723
Median Rent
12.8% income on rent
57°F
Avg Temperature
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Economy
2.7 / 5.0
$61,250 median income, 12.5% unemployment
A+
Affordability
5.0 / 5.0
$97,300 home value, $723/mo rent
B
Education
3.3 / 5.0
28.9% bachelor's degree or higher
Fort Supply enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 34°F in January while summers reach 81°F in July. Annual precipitation totals 25.2 inches. The area receives 12.4 inches of snow annually.
Temperature
34°F Jan (1°C)
81°F Jul (27°C)
| Annual Average | 56.9°F |
| 5% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 81°F (27°C) |
Geography
| Elevation | 2,006 ft (611 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 1,391/sq mi |
| Coordinates | 36.5721°N, 99.5735°W |
| Timezone | America/Chicago |
| County | Harper County County |
| Nearest Airport | Elk City Regional Business (ELK) 79 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 45.7 / 100 |
| Social Vulnerability | 77.5 / 100 |
| Community Resilience | 5.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very High |
| Drought | Relatively High |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 0.9 in | Coldest |
| February | 37°F (3°C) | 0.8 in | Driest |
| March | 47°F (8°C) | 1.9 in | |
| April | 56°F (13°C) | 2.2 in | |
| May | 66°F (19°C) | 3.2 in | |
| June | 76°F (24°C) | 3.8 in | Wettest |
| July | 81°F (27°C) | 2.6 in | Warmest |
| August | 79°F (26°C) | 3.1 in | |
| September | 70°F (21°C) | 2.0 in | |
| October | 58°F (14°C) | 2.5 in | |
| November | 45°F (7°C) | 1.1 in | |
| December | 35°F (2°C) | 1.2 in |
Fort Supply has a seasonal temperature swing of 47°F / from 34°F in January to 81°F in July. Total annual precipitation is 25.2 inches, with June being the wettest month (3.8") and February the driest (0.8").