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Tamms, IL
Full City Profile · Illinois · Alexander County County
2.9
/5.0
C+
Fair
532
Population
228/sq mi density
$41,250
Median Income
$20,220 per capita
$57,200
Home Value
$105,128 Zillow
$663
Median Rent
19.8% income on rent
58°F
Avg Temperature
305 sunny days/yr
320
Violent Crime/100K
4,280 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$41,250 median income, 2.1% unemployment
A+
Affordability
5.0 / 5.0
$57,200 home value, $663/mo rent
F
Safety
1.0 / 5.0
320 violent crimes/100K
D
Education
1.7 / 5.0
8.7% bachelor's degree or higher
Tamms enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 35°F in January while summers reach 79°F in July. The area gets 305 sunny days per year. Annual precipitation totals 49.4 inches. The area receives 7.2 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
35°F Jan (1°C)
79°F Jul (26°C)
| Annual Average | 57.9°F |
| 7% above US avg | |
| January Average | 35°F (1°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 305 days/yr |
Geography
| Elevation | 339 ft (103 m) |
| Area | 0.9 sq mi (2.3 km²) |
| Population Density | 228/sq mi |
| Coordinates | 37.2415°N, 89.2713°W |
| Timezone | America/Chicago |
| County | Alexander County County |
| Nearest Airport | Cairo Regional (CIR) 13 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 44.1 / 100 |
| Social Vulnerability | 86.8 / 100 |
| Community Resilience | 42.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (1°C) | 3.1 in | Coldest, Driest |
| February | 37°F (3°C) | 3.4 in | |
| March | 47°F (8°C) | 4.8 in | |
| April | 57°F (14°C) | 4.6 in | |
| May | 66°F (19°C) | 5.0 in | Wettest |
| June | 74°F (24°C) | 3.9 in | |
| July | 79°F (26°C) | 3.6 in | Warmest |
| August | 77°F (25°C) | 3.7 in | |
| September | 70°F (21°C) | 3.5 in | |
| October | 59°F (15°C) | 3.1 in | |
| November | 47°F (9°C) | 4.3 in | |
| December | 37°F (3°C) | 4.3 in |
Tamms has a seasonal temperature swing of 44°F / from 35°F in January to 79°F in July. Total annual precipitation is 47.3 inches, with May being the wettest month (5.0") and January the driest (3.1").