Longmont climate
Warm summer afternoons, cold winter nights, hail, smoke, and flooding shape the home choice
NOAA's 1991 through 2020 normals for the Longmont 2 ESE station show a July average high of 90.8°F and low of 55.4°F, a January average high of 44.5°F and low of 14.4°F, and about 15.21 inches of annual precipitation. The station records about 178 days when the minimum is at or below freezing and about eight days with subzero minimum temperatures.
Longmont's climate decision is not just a temperature comparison. Hail, wind, thunderstorms, snow, smoke, dry wildfire weather, spring runoff, and river flooding can change the day. Inspect cooling, shade, hydration, heating, insulation, windows, roof, gutters, drainage, basement, filters, backup power, snow service, and a comfortable indoor option.
The city encourages reverse emergency notifications and provides flood, river, weather, and wildfire preparation resources. The catalog's AQI field is a modeled current estimate rather than a monitor reading, so use CDPHE, AirNow, and current warnings for a visit. Keep those short-term conditions separate from the station normals. The home should remain workable when the best outdoor plan is cancelled.
Living through the seasons
Summers are the easier season. Winter comfort deserves a closer look.
- Overall Comfort
- Moderate
2.2 / 5
- Average Summer High
- 88°F
- Days Above 90°F
- 51 days/year
- Summer Feel
- Very Good
Warm · 88°F
Good
3.4 / 5
- Average Winter Low
- 22°F / -6°C
- Days Below Freezing
- 156 days/year
- Winter Feel
- Poor
Fair
Poor
1 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 48%
- Comfortable Months
- 5 months
- Solar Exposure
- 1698 peak sun hrs/yr
Excellent
Fair
Fair
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Good
4.7 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 5.4 µg/m³ 2021-2025 modeled average
- Best Months
- May, Jun, Jul, Aug, Sep
- Toughest Months
- Feb, Jan, Dec
- Heat Risk
- Moderate
- Drought Risk
- Low
- Weather Volatility
- Moderate
Good · 5.4 µg/m³ 2021-2025 modeled average
Good
3.1 / 5
Longmont in everyday life
Could Longmont work for you?
What may work well
- The NOAA station gives transparent temperature, precipitation, and freezing-day inputs for home planning.
- Warm summer days support greenways, parks, reservoirs, and outdoor time when shade and hydration are workable.
- Libraries, hospitals, recreation, museums, and downtown destinations provide indoor alternatives during difficult weather.
What to think about
- Cold nights, about 178 freezing minimum days, snow, and occasional subzero conditions make heating, traction, and snow service central questions.
- A July average high near 90.8°F makes cooling, shade, hydration, and indoor alternatives important.
- Hail, thunderstorms, smoke, wildfire, flood, wind, and runoff can change the day beyond station averages.
Make Longmont's climate workable at the exact home
Inspect winter duties
Ask about heating, insulation, pipes, roof, gutters, snow service, sidewalks, parking, traction, power, and the route to care after a storm.
Plan hot and smoky days
Check cooling, shade, filters, ventilation, hydration, medication storage, indoor exercise, and a flexible time for errands or recreation.
Review flood and fire preparation
Use city and FEMA maps, register for alerts, check drainage and evacuation routes, review insurance, and keep supplies ready for smoke, flood, power, or fire.
Compare seasons in person
Visit during warm weather and again during snow, hail, smoke, or heavy rain if possible. Note indoor comfort, outdoor energy, parking, mobility, and the return home.
Questions retirees ask
How hot and cold is Longmont?
NOAA normals show a July average high of 90.8°F and low of 55.4°F, a January average high of 44.5°F and low of 14.4°F, about 178 freezing minimum days, and about eight days with subzero minimum temperatures.
What weather risks matter most at a home?
Review hail, wind, thunderstorms, snow, smoke, wildfire, flood, runoff, drainage, roof, gutters, basement, insurance, heating, cooling, power, and the route to care.
What should I ask about a winter home?
Ask about insulation, heating, pipes, roof, gutters, snow service, sidewalks, parking, traction, power backup, smoke filtration, and the route to care, groceries, pharmacy, and family after a storm.
Do climate normals tell me about air quality or flooding?
No. Station normals describe long-term temperature and precipitation patterns. Check current air, wildfire, river, flood, storm, and road information, then inspect the exact property and its warning plan.
Longmont's climate can suit a retiree who enjoys bright summers and a full outdoor season, provided the home can handle heat, cold, hail, smoke, snow, drainage, and flood preparation. Save the seasonal home plan, Compare another address, and choose Find my fit when heating, cooling, air, mobility, and care routes remain workable.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk, Weather Volatility
- Open-Meteo / Copernicus CAMS, checked against U.S. EPA AirData
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- Federal Emergency Management Agency National Risk Index
Used for Drought Risk
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Partner with Retirement ListsResearch and writing byGrant Gibson
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