Does I-25 close at Monument Hill?

It can. CDOT's October 2019 advisory warned of possible closures for Monument Hill and the Gap and asked drivers to avoid the stretch overnight. Closures and lowered speed limits are posted on COtrip; this page shows the forecast for each stretch and active NWS warnings.

Why does Monument get snow when Denver does not?

Monument sits on the Palmer Divide, the ridge I-25 climbs between Castle Rock and Colorado Springs. NWS Boulder's February 2020 storm summary describes heavy snow from Denver south to the divide, and NWS Pueblo forecasts the Monument stretch as its own zone. Check the forecast for the hour you will cross the hill, not the Denver forecast.

Do I need chains or snow tires on I-25?

When CDOT activates the Traction Law, passenger vehicles need snow tires, mud and snow tires with adequate tread, chains or four-wheel drive; commercial vehicles chain up at the Larkspur station before the climb. CDOT's 2019 advisory told drivers to have adequate traction to meet the law.

I-25 · CO

I-25 over Monument Hill: road conditions right now

Denver, CO to Colorado Springs, CO

I-25 between Denver and Colorado Springs climbs the Palmer Divide over Monument Hill, through the 18-mile stretch from south of Castle Rock to Monument that CDOT calls the Gap. NWS Boulder forecasts Denver and Douglas County; NWS Pueblo forecasts Monument and El Paso County in a zone named Monument Ridge and Rampart Range Below 7,500 Feet, so a storm warning on the hill can be in effect while Denver has none.

Plan this drive for your departure time

Conditions at Wed, 2:49 AM MST

Highest risk along I-25: 1 of 5 (low), departing at that time.

No active NWS alerts on this route.

The road authority linked below has the final word on closures and chain requirements.

Right now: LOW riskdeparting Wed, 3:00 AM MST from Denver, CO

Clear driving for the whole 1 h 4 min.

Conditions: Clear, Clear with periodic clouds, Partly cloudy

Plan this drive with your own departure timeChecked Wed, 2:49 AM MST. Updates hourly.

Checkpoints along I-25

Where	You pass	Weather	Risk	Why
Denver, CO	Wed 3:00 AM	38°Fpavement 36°F	low	Nothing flagged
Castle Rock, CO	Wed 3:30 AM	34°Fpavement 37°F	low	Nothing flagged
Colorado Springs, CO	Wed 4:00 AM – 4:04 AM	38°F	low	Nothing flagged

Why this stretch is hard in winter

CDOT rebuilt the Gap between 2018 and November 2022 with truck climbing lanes near Monument Hill and the Greenland exit and a southbound truck chain-up station in Larkspur for chaining up before the climb over Monument Hill.
Ahead of the October 23, 2019 storm, CDOT forecast five to nine inches in the Gap, pretreated Monument Hill north to Castle Rock with brine, and warned of travel impacts including possible closures for Monument Hill.
NWS Boulder's summary of the February 5 to 7, 2020 storm describes heavy snow over the I-25 corridor from Denver south to the Palmer Divide, with 6 to 14 inches in the Denver metro area and up to 20 inches in the southern foothills.
The drive crosses two NWS offices: Boulder for Denver and Castle Rock, Pueblo for Monument and Colorado Springs. This page shows alerts from both.

What this page checks

Hourly forecast at every checkpoint for the time you would be there: temperature, precipitation type and rate, gusts, visibility.
Active National Weather Service watches, warnings, and advisories on the route.
Snow on the ground (NOAA SNODAS) and the Weather Prediction Center winter impact outlook.
Pavement temperature and surface state from state DOT road sensors, when you are leaving within a few hours.
Chain controls, closures, and winter road condition reports from state DOT feeds where they are published openly.
Seasonal closures of mountain roads the router might otherwise use.

Official sources for this corridor

Questions drivers ask about I-25

Does I-25 close at Monument Hill?: It can. CDOT's October 2019 advisory warned of possible closures for Monument Hill and the Gap and asked drivers to avoid the stretch overnight. Closures and lowered speed limits are posted on COtrip; this page shows the forecast for each stretch and active NWS warnings.
Why does Monument get snow when Denver does not?: Monument sits on the Palmer Divide, the ridge I-25 climbs between Castle Rock and Colorado Springs. NWS Boulder's February 2020 storm summary describes heavy snow from Denver south to the divide, and NWS Pueblo forecasts the Monument stretch as its own zone. Check the forecast for the hour you will cross the hill, not the Denver forecast.
Do I need chains or snow tires on I-25?: When CDOT activates the Traction Law, passenger vehicles need snow tires, mud and snow tires with adequate tread, chains or four-wheel drive; commercial vehicles chain up at the Larkspur station before the climb. CDOT's 2019 advisory told drivers to have adequate traction to meet the law.

Conditions change by the hour. This page is a planning aid built on public forecasts and DOT feeds; the road authority linked above has the final word on closures and chain requirements.

Nearby corridors: I-70 through the Colorado mountains · I-25 over Raton Pass · I-70 from Kansas City to Denver · I-80 across Wyoming · I-40 through Tijeras Canyon · I-40 from Albuquerque to Flagstaff · all corridors