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DeKalb County
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DeKalb County Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
DeKalb County year round climate
- Spring (March–May): Average 37–62°F, mild climate, but early spring can be cold, more rainfall, especially in April. Common activities: Outdoor walks (be mindful of weather changes), flower viewing (if suitable flowers are available locally). Recommended clothing: Layered clothing, jacket, thermal underwear, long-sleeved shirts.
- Summer (June–August): Average 69–71°F, warm and humid, most rainfall in July. Common activities: Outdoor activities (be mindful of sun protection and rain), swimming (if suitable facilities are available locally). Recommended clothing: Light and breathable clothing, rain gear.
- Autumn (September–November): Average 52–64°F, pleasant climate, rainfall gradually decreases. Common activities: Hiking, autumn leaf viewing (if suitable tree species are available locally). Recommended clothing: Comfortable long-sleeved shirts, jacket.
- Winter (December–February): Average -5.4–-33.6°F, cold and dry, low probability of snowfall, but low temperatures. Common activities: Indoor activities, skiing (if there are ski resorts nearby). Recommended clothing: Warm clothing, thick jacket, hat, gloves, scarf.
DeKalb County climatological average
Annual average temperature: approx. 50.0°F / Annual rainfall: approx. 1147 mm / Summer humidity: 65%–75% / Rainiest month: July
DeKalb County monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
22.3°F
51.5
February
29.8°F
61.3
March
37.9°F
108.2
April
48.2°F
128.2
May
62.1°F
106.7
June
70.5°F
95
July
71.6°F
160.6
August
69.8°F
140.8
September
64.8°F
118.9
October
52.5°F
62.9
November
39.9°F
53.4
December
30.4°F
60.3
DeKalb County weather for the next seven days
5/18
Monday
Moderate rain
81.9°F/68.5°F
5/19
Tuesday
Patchy rain nearby
75.6°F/51.3°F
5/20
Wednesday
Sunny
60.5°F/42.7°F
5/21
Thursday
Sunny
63.5°F/43.2°F
5/22
Friday
Partly Cloudy
64.2°F/48°F
5/23
Saturday
Patchy rain nearby
68.4°F/53.9°F
5/24
Sunday
Patchy rain nearby
73.6°F/60.5°F
