Lyons, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Lyons weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——92°63°—
- MondayJul 6Overcast——95°67°+3°
- TuesdayJul 7Light Drizzle67%—95°67°0°
- WednesdayJul 8Overcast73%—95°59°0°
- ThursdayJul 9Overcast64%—98°62°+3°
- FridayJul 10Overcast18%—95°63°-3°
- SaturdayJul 11Partly Cloudy——99°61°+4°
AQI 35 (Good), driven by PM2.5. AQI down 32 over the last 6 hours — air quality is improving sharply. PM2.5 at 7.5 µg/m³ (AQI 42) with a 0.91 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 7.5 µg/m³ (AQI 42) with a 0.91 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:20 PM
- Moonset
- 11:16 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Lyons at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: April 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 80540
15-Day Forecast — Lyons
- Sun92°64°1%
- Mon95°67°3%
- Tue95°67°67%
- Wed95°59°73%
- Thu98°62°64%
- Fri95°63°18%
- Sat99°61°2%
- Sun101°65°3%
- Mon107°66°8%
- Tue100°70°14%
- Wed102°69°28%
- Thu104°65°55%
- Fri99°67°52%
- Sat103°67°59%
- Sun90°69°72%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Lyons
SPC includes Lyons in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Lyons
- 80540