🇺🇸 Allentown vs 🇹🇷 Istanbul

Weather Comparison

Current Weather Right Now

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Allentown

scattered clouds

55°F

Scattered Clouds

Feels like 53°F

H 56°F / L 52°F

Humidity: 66%

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Istanbul

clear sky

53°F

Clear Sky

Feels like 50°F

H 53°F / L 53°F

Humidity: 50%

Climate Overview

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Allentown

Allentown in the Lehigh Valley south of the Blue Mountain Ridge has a sheltered climate with less precipitation than the coastal plain. The Blue Mountain blocks some northwesterly cold air creating slightly milder conditions. The Lehigh River creates valley humidity and the dense urban core has significant heat island effects.

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Istanbul

Mediterranean-influenced humid subtropical — warm summers, cool wet winters

Best monthsApril, May, September, October
AvoidDecember, January (cold and rainy), July, August (peak crowds and heat)
Annual rain29 inches (744 mm)

Istanbul straddles two continents with a climate to match. The Bosphorus creates a persistent wind corridor that moderates summer heat. Winters are cold and rainy with occasional snow. Spring and fall are exceptional.

Seasonal Comparison

Season🇺🇸 Allentown🇹🇷 Istanbul
Spring

46–68°F

March–May

Summer

72–86°F

June–August

Fall

57–77°F

September–November

Winter

38–48°F

December–February

Allentown vs Istanbul: Frequently Asked Questions

Does Allentown or Istanbul have better weather?

Allentown and Istanbul have very different climates. Allentown in the Lehigh Valley south of the Blue Mountain Ridge has a sheltered climate with less pr Istanbul: Mediterranean-influenced humid subtropical — warm summers, cool wet winters. The best city depends on your preferred season and temperature range.

When is the best time to visit Allentown vs Istanbul?

Best time for Allentown: spring and fall. Best time for Istanbul: April, May, September, October.

More Comparisons

🇺🇸 Allentown Weather →🇹🇷 Istanbul Weather →