Historical weather data, all-time temperature records, and monthly climate averages for Littleton, CO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Littleton sits in that classic Colorado in-between zone — expect a high around 59° and a low near 31°, with a 1-in-5 chance of snow still very much on the table. The date's range is wild: it hit 79° back in 2005 but bottomed out at 23° as recently as 2020. Pack layers and don't put the scraper away just yet.
Littleton's weather has some serious range — 123 degrees separating the all-time high of 108° (July 2005) and the all-time low of -15° (January 2017). A single March day in 2003 dumped 19.2 inches of snow, and a mid-August storm in 2004 unleashed 3.51 inches of rain. This is a place that keeps you on your toes year-round.
Summer is the clear sweet spot, with highs peaking around 94° the week of July 16th before tapering off through a warm September. If you're cold-averse, avoid early January, when average highs barely crack 46°. Spring is the wettest stretch — the week of May 7th averages nearly an inch of precip — so pack a rain jacket alongside your sunscreen.