Littleton, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Littleton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——96°67°—
- MondayJul 6Overcast——98°71°+2°
- TuesdayJul 7Overcast50%—96°66°-2°
- WednesdayJul 8Drizzle61%—94°63°-2°
- ThursdayJul 9Light Drizzle49%—91°61°-3°
- FridayJul 10Overcast24%—95°62°+4°
- SaturdayJul 11Clear——97°64°+2°
AQI 45 (Good), driven by PM2.5. AQI down 55 over the last 6 hours — air quality is improving sharply. PM2.5 at 10.0 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
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 10.0 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.96
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:19 PM
- Moonset
- 11:15 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Littleton at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 80120, 80121, 80122, 80123, 80125, 80126, 80127, 80128 +2 more
15-Day Forecast — Littleton
- Sun95°67°4%
- Mon98°71°4%
- Tue96°66°50%
- Wed94°63°61%
- Thu91°61°49%
- Fri95°62°24%
- Sat97°64°5%
- Sun99°65°2%
- Mon106°65°8%
- Tue104°71°23%
- Wed104°67°25%
- Thu102°66°52%
- Fri99°64°52%
- Sat103°66°48%
- Sun95°66°61%
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 — Littleton
SPC includes Littleton 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 Littleton
- 80128
- 80122
- 80123
- 80120
- 80160
- 80165
- 80166