Weather in Windsor,CO: A Comprehensive Guide to Seasonal Changes
Summer in Windsor, CO (June to August)
Windsor, CO, typically experiences warm, sunny summers with relatively low humidity. Daytime temperatures often reach the 80s°F and can climb into the 90s°F during hotter periods. Because Northern Colorado’s air is generally drier than the Southeast, evenings often feel more comfortable once the sun goes down.
Afternoon and evening thunderstorms can develop during the summer. These storms may bring brief heavy rain, lightning, gusty winds and hail. Conditions can change quickly, so residents should monitor local forecasts before outdoor activities, especially when storms are expected.
To stay comfortable during Windsor summers, residents should drink plenty of water, use sunscreen and limit strenuous outdoor activity during the hottest part of the day. Homeowners may also want to service their air-conditioning systems, inspect roofs after hailstorms and maintain irrigation equipment before peak summer use.
Autumn in Windsor, CO (September to November)
As summer transitions into autumn, Windsor, CO, experiences cooler days and increasingly crisp mornings. September can remain warm, while temperatures generally become much cooler through October and November. Large differences between daytime and nighttime temperatures are common.
Autumn can be an enjoyable season for walking local trails, visiting parks and attending community events. Trees throughout established neighborhoods and public spaces add seasonal color, although foliage timing and intensity vary from year to year.
Weather can change rapidly during the fall. Warm, sunny afternoons may be followed by cold fronts, strong winds or early snowfall. Residents should follow daily forecasts and prepare outdoor plumbing, sprinkler systems and landscaping before sustained freezing temperatures arrive.
Winter in Windsor, CO (December to February)
Winter in Windsor, CO, brings cold nights, periodic snowfall and a mixture of mild and sharply colder daytime conditions. Temperatures can rise above freezing on sunny days but may fall well below freezing when Arctic air moves into Northern Colorado.
Snow is a normal part of Windsor winters, although accumulation varies considerably from one storm to another. Roads can become icy, and blowing snow may reduce visibility during windy conditions. Sunshine between storms often helps melt snow on exposed pavement, but shaded surfaces may remain icy.
Residents should prepare homes and vehicles for winter conditions by servicing heating systems, protecting outdoor pipes, keeping snow-removal supplies available and carrying emergency equipment in their vehicles. Strong winds can make temperatures feel colder and may contribute to drifting snow.
Spring in Windsor, CO (March to May)
Spring is a highly variable season in Windsor, CO. Mild, sunny days may be followed by freezing temperatures, rain or snow. Daytime temperatures gradually rise through the season, but late freezes remain possible and can affect gardens and landscaping.
Spring is also one of Northern Colorado’s more active weather periods. Thunderstorms may produce lightning, hail, strong winds and sudden temperature changes. Late-season snowstorms can occur as well; Northern Colorado experienced disruptive snowfall as late as May 2026.
As temperatures warm, parks, trails and outdoor spaces become increasingly active. Residents should keep layered clothing nearby, delay sensitive planting until frost risks decline and monitor forecasts when severe weather is possible. NOAA’s 1991–2020 climate normals provide the standard long-term reference for evaluating seasonal temperature, precipitation and snowfall patterns.