Historical weather data, all-time temperature records, and monthly climate averages for Romulus, MI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Romulus runs cool but unpredictable — the average high is only 52° with lows dipping to 33°, but this date has swung from a balmy 78° back in 1988 to a bitter 17° in 1995. There's nearly a coin-flip chance of precipitation today (45%), with a 1-in-10 shot that some of it falls as snow.
Romulus has seen some serious weather extremes over its 68 years of records — from a scorching 104° on June 25, 1988, to a brutal -21° on January 21, 1984, a swing of 125 degrees. The wettest single day on record dropped 4.57 inches of rain on August 11, 2014, while a December 1974 storm buried the area under 18.4 inches of snow in a single day.
Summer is the sweet spot here — the warmest week of the year runs July 16–22 with average highs of 84°, while January bottoms out around 30–31° for highs. If you're trying to avoid rain, skip mid-June, which is the wettest stretch of the year averaging nearly an inch of precipitation per week.