Denver weather: FAQ for Halloween Week 2024

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Here is a guide to the weather through Halloween for the Denver area.

1. When will Denver see its first freeze of the season?
Denver officially hit 32°F on October 25th, marking its first freeze of the season. This is about two weeks later than the average first freeze date for the city. However, that was DIA and many locations in the area have yet to experience a freeze, with some potentially setting records for the latest first freeze in decades.

For those locations that have yet to freeze, this is pushing the limit in decades. We ran the numbers through 10/27 and here are those locations that have set a record latest freeze or potentially will this week in two different timesteps: Since 1990 and since 1970. Blue marks indicate 2024 set a new record. Red marks indicate 2024 is threatening the record.

2. What kind of weather can we expect for Halloween week?
After a mild start to the week, temperatures will drop significantly beginning Tuesday, with the coldest day expected to be Wednesday. Wind will be annoyingly strong for many of us. A storm system moving in will bring rain and snow to the state, along with much cooler temperatures. We expect the first widespread freeze for the metro areas/Front Range by Thursday morning.

Temperature timeline for the Front Range:

3. Will the cold weather bring snow to Denver?
While the mountains are expected to receive significant snowfall, with some areas potentially seeing over a foot, just a bit of precipitation is forecast for Denver. There is a slight chance of showers today through Wednesday - a brief snow burst on Wednesday morning, with possible accumulation and some slick areas for the commute and morning. We'll watch for trends related to this closely today, and pass along an update on Wednesday's snowfall potential for the urban corridor if need be.

A timeline for Denver:

A timeline for Colorado:

Potential snowfall totals for Colorado:

We'll watch for trends related to this closely today, and pass along an update on Wednesday's snowfall potential for the urban corridor if need be.

4. What will the weather be like for trick-or-treating on Halloween?
Halloween is currently looking cool and mostly dry across the state. Highs will be in the 50s and 40s, so plan for chilly temperatures, especially as the sun sets Thursday evening.

5. How cold will it get overnight during Halloween week?
Overnight lows are forecast to dip into the mid to upper 20s for Halloween morning, with some models predicting below-freezing temperatures through the weekend. This will be the first freeze for many areas.

6. What is causing the sudden drop in temperatures?
A strong trough is moving into the Four Corners region, bringing with it a significant mass of cold air. This will result in below-average temperatures across the state, particularly Wednesday through Thursday morning.

7. Is there any more snow in the forecast after Halloween?
Another storm system is possible early next week, but the details are still uncertain. We are monitoring its development and encourage you to stay updated on the forecast, which leads us to...

8. Where can I get more information and updates on the Denver weather forecast?
We'll watch for trends related to this closely today, and pass along an update on Wednesday's snowfall potential for the urban corridor if need be. For the most up-to-date information and detailed forecasts, you can subscribe to Weather5280 and sign up for our email alerts.