Boulder, CO Hourly Forecast
Boulder temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 3 PM - around 96°
- Coolest hour: 6 AM - around 61°
- Rain risk: low all day (peaks at 0%)
- UV peak: 1 PM at index 10 - sun protection recommended
- Windiest: 9 PM at 12 mph
Boulder hourly weather - Thursday, August 6
In Boulder, expect a high near 96°F (36°C) around 3 PM and a low of 67°F (20°C) near 11 PM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 1 PM | Sunny | 94° | 86° | 0% | 4 mph NE | 6% | 10 | |
| 2 PM | Sunny | 95° | 87° | 0% | 4 mph NE | 5% | 9 | |
| 3 PM | Sunny | 96° | 87° | 0% | 7 mph NE | 5% | 8 | |
| 4 PM | Sunny | 96° | 88° | 0% | 4 mph NE | 5% | 5 | |
| 5 PM | Sunny | 96° | 88° | 0% | 3 mph NNE | 4% | 3 | |
| 6 PM | Sunny | 95° | 86° | 0% | 5 mph NW | 5% | 1 | |
| 7 PM | Sunny | 87° | 79° | 0% | 5 mph NW | 8% | 0 | |
| 8 PM | Sunny | 74° | 64° | 0% | 8 mph WNW | 11% | 0 | |
| 9 PM | Clear | 70° | 57° | 0% | 12 mph WNW | 11% | 0 | |
| 10 PM | Clear | 68° | 57° | 0% | 10 mph WNW | 11% | 0 | |
| 11 PM | Clear | 67° | 56° | 0% | 10 mph W | 12% | 0 |
Boulder hourly weather - Friday, August 7
In Boulder, expect a high near 97°F (36°C) around 4 PM and a low of 61°F (16°C) near 6 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 66° | 56° | 0% | 8 mph W | 14% | 0 | |
| 1 AM | Clear | 65° | 54° | 0% | 9 mph W | 14% | 0 | |
| 2 AM | Clear | 65° | 54° | 0% | 10 mph WSW | 14% | 0 | |
| 3 AM | Clear | 63° | 52° | 0% | 9 mph W | 15% | 0 | |
| 4 AM | Clear | 62° | 51° | 0% | 9 mph W | 15% | 0 | |
| 5 AM | Clear | 62° | 51° | 0% | 10 mph W | 15% | 0 | |
| 6 AM | Clear | 61° | 50° | 0% | 9 mph W | 15% | 0 | |
| 7 AM | Sunny | 64° | 54° | 0% | 7 mph W | 17% | 0 | |
| 8 AM | Sunny | 78° | 72° | 0% | 2 mph NW | 13% | 1 | |
| 9 AM | Sunny | 82° | 75° | 0% | 4 mph ENE | 11% | 3 | |
| 10 AM | Sunny | 85° | 77° | 0% | 6 mph E | 9% | 5 | |
| 11 AM | Sunny | 87° | 79° | 0% | 7 mph E | 9% | 7 | |
| 12 PM | Sunny | 90° | 81° | 0% | 7 mph E | 8% | 9 | |
| 1 PM | Sunny | 93° | 84° | 0% | 8 mph ESE | 7% | 10 | |
| 2 PM | Sunny | 95° | 85° | 1% | 9 mph ESE | 6% | 9 | |
| 3 PM | Partly Cloudy | 97° | 86° | 2% | 10 mph ESE | 6% | 7 | |
| 4 PM | Sunny | 97° | 86° | 0% | 10 mph ESE | 6% | 5 | |
| 5 PM | Sunny | 96° | 85° | 1% | 10 mph E | 6% | 2 | |
| 6 PM | Cloudy | 95° | 86° | 6% | 8 mph ESE | 6% | 1 | |
| 7 PM | Sunny | 86° | 80° | 0% | 3 mph SE | 12% | 0 | |
| 8 PM | Sunny | 76° | 70° | 0% | 2 mph SE | 13% | 0 | |
| 9 PM | Clear | 71° | 64° | 1% | 4 mph W | 14% | 0 | |
| 10 PM | Clear | 72° | 62° | 0% | 8 mph W | 14% | 0 | |
| 11 PM | Clear | 68° | 58° | 1% | 8 mph W | 16% | 0 |
Boulder hourly weather - Saturday, August 8
In Boulder, expect a high near 99°F (37°C) around 2 PM and a low of 65°F (18°C) near 5 AM; precipitation risk peaks at 17% around 9 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 68° | 58° | 1% | 9 mph W | 17% | 0 | |
| 1 AM | Clear | 67° | 57° | 1% | 9 mph W | 18% | 0 | |
| 2 AM | Clear | 66° | 56° | 0% | 9 mph WSW | 19% | 0 | |
| 3 AM | Clear | 66° | 56° | 0% | 10 mph WSW | 19% | 0 | |
| 4 AM | Clear | 66° | 56° | 0% | 9 mph WSW | 20% | 0 | |
| 5 AM | Clear | 65° | 55° | 0% | 10 mph W | 20% | 0 | |
| 6 AM | Clear | 66° | 55° | 0% | 11 mph WSW | 19% | 0 | |
| 7 AM | Sunny | 68° | 58° | 0% | 11 mph W | 19% | 0 | |
| 8 AM | Sunny | 81° | 72° | 1% | 8 mph W | 15% | 1 | |
| 9 AM | Sunny | 91° | 84° | 0% | 5 mph W | 10% | 2 | |
| 10 AM | Sunny | 94° | 87° | 0% | 5 mph NW | 7% | 4 | |
| 11 AM | Sunny | 97° | 89° | 0% | 6 mph N | 7% | 7 | |
| 12 PM | Sunny | 98° | 91° | 1% | 4 mph NNW | 6% | 8 | |
| 1 PM | Sunny | 99° | 90° | 1% | 8 mph WNW | 6% | 6 | |
| 2 PM | Sunny | 99° | 91° | 0% | 6 mph NW | 6% | 4 | |
| 3 PM | Sunny | 96° | 83° | 0% | 15 mph NE | 8% | 4 | |
| 4 PM | Sunny | 98° | 87° | 0% | 10 mph ESE | 7% | 4 | |
| 5 PM | Sunny | 96° | 87° | 1% | 6 mph ESE | 8% | 2 | |
| 6 PM | Sunny | 89° | 74° | 1% | 20 mph NE | 12% | 1 | |
| 7 PM | Sunny | 83° | 77° | 1% | 4 mph SW | 17% | 0 | |
| 8 PM | Patchy rain nearby | 73° | 65° | 6% | 9 mph WSW | 21% | 0 | |
| 9 PM | Patchy rain nearby | 70° | 63° | 17% | 7 mph W | 27% | 0 | |
| 10 PM | Clear | 72° | 64° | 1% | 8 mph W | 24% | 0 | |
| 11 PM | Clear | 69° | 61° | 1% | 8 mph WSW | 26% | 0 |
Quick answers for the hours ahead
What is the warmest hour in Boulder today?
Will it rain in Boulder tonight?
When is the UV index highest in Boulder today?
Boulder hour-by-hour: what to expect
Over the next 24 hours in Boulder, temperatures range from 61°F (16°C) around 6 AM up to 96°F (36°C) near 3 PM - about 13°F (7°C) above the typical August high of 83°F (28°C).
Precipitation chances stay minimal throughout, so plans can skip the umbrella. UV reaches 10 (1 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the Boulder 14-day forecast or the monthly climate averages.