Weather on March 18 at Indiana Dunes

Indiana Dunes National Park

INMidwest600 ft elevation
Avg High48°F
Avg Low30°F
Warmest201268°F
Coldest199323°F

Based on 55 years of data from Gary, IN

Planning Your Visit

March 18th in Indiana Dunes National Park (via Gary, IN) typically brings chilly spring weather, with average highs around 48°F and lows near 30°F. Over 55 years of records, the warmest March 18th was in 2012 (68°F average), while the coldest was 1993 (23°F) — a 45°F range across recorded history. Precipitation has occurred on 25% of recorded March 18th dates, with snow falling 5% of the time (heaviest snowfall: 2"). Temperatures on this date have remained relatively stable over the past several decades.

Temperatures on this date have remained relatively stable over the past several decades.

Planning for March 18th in Indiana Dunes? Bring layers as temperatures can vary throughout the day.

Year by Year History

YearHighLowPrecipSnow
202648°F23°F----
202557°F33°F0"0"
202439°F25°F0"0"
202337°F11°F0"0"
202272°F35°F0"0"
202146°F35°F0.13"0"
202041°F33°F0"0"
201944°F26°F----
201841°F23°F----
201745°F33°F0.05"0"
201656°F35°F0"0"
201547°F32°F0"0"
201437°F15°F0"0"
201338°F28°F0"0"
201278°F58°F0.13"0"
201170°F43°F0"0"
201053°F32°F0"0"
200973°F40°F0"0"
200842°F33°F0.53"0"
200736°F21°F0"0"
200636°F31°F0"0"
200538°F28°F0"0"
200435°F26°F0.13"0.5"
200372°F34°F0"0"
2001--22°F0"0"
200035°F25°F0"0"
199963°F31°F0"0"
199853°F37°F2.72"0"
199737°F24°F0"0"
199635°F23°F----
199552°F34°F0"0"
199440°F26°F0"0"
199334°F13°F0"0"
199237°F28°F0"0"
199146°F35°F0"0"
199046°F31°F0.05"0"
198949°F21°F1.04"1"
198842°F25°F----
198749°F--0"0"
198661°F36°F0.46"0"
198548°F29°F0"0"
198435°F26°F0.51"2"
198344°F40°F1.45"0"
198246°F29°F0.03"0"
198134°F31°F0"0"
198049°F22°F0"--
197970°F43°F0"0"
197839°F19°F0"0"
197746°F33°F0.66"0"
197663°F30°F0"0"
197558°F40°F0"0"
197450°F30°F0"0"
197340°F26°F0"0"
197242°F30°F0"0"
197143°F29°F0.1"0"

March 18 at Nearby Parks

Holiday Weather at Indiana Dunes

Official NPS WebsiteVisit nps.gov/indu for park information, alerts, and reservations

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March 18 Weather at Indiana Dunes National Park - Historical Data