Historical weather data, all-time temperature records, and monthly climate averages for Capitol Hill, DC. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th on Capitol Hill lands right in the sweet spot of spring, with highs averaging 65° and lows around 42° across 75 years of records. There's a 37% chance of rain, so pack a layer — but don't worry about snow, that risk is effectively zero. The date has swung wildly in the past, from a scorching 85° in 1956 to a bitter 26° low in 1964.
Capitol Hill weather doesn't mess around at the extremes — this location has baked at 106° (July 2011) and frozen at -10° (January 1982), a 116-degree spread that tells you everything about DC's climate personality. A single storm dropped 7.37 inches of rain on June 26, 2006, and a January 1966 snowstorm buried the Hill under 16 inches in one day.
Summer is the dominant season here — highs average 89° during the warmest week of mid-July, and June through August all run above 85°. If you're heat-averse, aim for April, October, or November, when highs sit in the 60s and 70s. July is also the wettest stretch of the year, averaging over an inch of precip in a single week, so afternoon thunderstorms are part of the deal.