Calhan, Colorado Weather
Pikas hayfeeding in granite peaks. Day 76 of spring. Read this microseason across nine climate regions →
Calhan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast18%—73°52°—
- ThursdayJun 4Overcast——84°50°+11°
- FridayJun 5Light Drizzle11%—79°60°-5°
- SaturdayJun 6Light Drizzle——82°59°+3°
- SundayJun 7Overcast19%—85°56°+3°
- MondayJun 8Overcast40%—85°58°0°
- TuesdayJun 9Overcast38%—87°56°+2°
Ozone at AQI 51 — peak already passed at 1 PM under overcast skies. AQI up 12 over the last 6 hours (gradual rise). Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 51 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 2.0 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 51
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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:47 AM
- Moonset
- 2:02 PM
- In sign
- ♑︎ Capricorn
Pikas hayfeeding in granite peaks
Calhan at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Warm-season window is open
As of June 3, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Calhan
SPC has placed Calhan in the General Thunderstorms category for severe thunderstorms today.
- 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.