Historical weather data, all-time temperature records, and monthly climate averages for Jamestown, ND. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Jamestown runs chilly, with an average high of just 47° and lows near freezing at 26°. That said, the date has seen wild swings — from a balmy 82° back in 1991 to a brutal 0° low in 1979. There's a 1-in-4 chance of precipitation today, with a lingering 10% shot at snow.
Jamestown earns its place in the Great Plains weather hall of fame: 108° in July 1973, and -37° in December 1983 — a gut-punch swing of 145 degrees between extremes. The wettest single day on record dropped 6.35 inches in July 1993, while a March 1975 storm buried the city under nearly 15 inches of snow in one shot.
Summer is brief and warm, peaking the week of July 9–15 with average highs of 83°, while January and February are brutally cold, with highs scraping just 17–24°. If rain is a concern, June is the wet season — the wettest week averages nearly an inch of precipitation. Spring and fall offer mild shoulder seasons, but expect wide temperature swings in both.