Boulder, CO Hourly Forecast
Colorado, United States 🇺🇸
56°
Clear
Feels like 52°
Updated 4 hours ago
Boulder temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 2 PM - around 82°
- Coolest hour: 6 AM - around 55°
- Highest rain chance: 4 PM (70%) - pack accordingly
- UV peak: 12 PM at index 8 - sun protection recommended
- Windiest: 4 PM at 12 mph
Boulder hourly weather - Thursday, August 13
In Boulder, expect a high near 82°F (28°C) around 2 PM and a low of 55°F (13°C) near 6 AM; precipitation risk peaks at 70% around 4 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 5 AM | Clear | 56° | 52° | 5% | 5 mph W | 65% | 0 | |
| 6 AM | Clear | 55° | 53° | 6% | 4 mph WNW | 67% | 0 | |
| 7 AM | Sunny | 62° | 60° | 5% | 3 mph NW | 66% | 0 | |
| 8 AM | Sunny | 66° | 66° | 5% | 3 mph NNE | 66% | 1 | |
| 9 AM | Sunny | 69° | 68° | 5% | 3 mph ENE | 64% | 2 | |
| 10 AM | Patchy rain nearby | 72° | 71° | 13% | 5 mph E | 57% | 4 | |
| 11 AM | Patchy rain nearby | 75° | 73° | 9% | 6 mph E | 51% | 6 | |
| 12 PM | Patchy rain nearby | 78° | 76° | 10% | 8 mph ESE | 45% | 8 | |
| 1 PM | Patchy rain nearby | 81° | 77° | 17% | 8 mph ESE | 40% | 8 | |
| 2 PM | Patchy rain nearby | 82° | 79° | 17% | 8 mph E | 37% | 2 | |
| 3 PM | Patchy light rain | 80° | 80° | 57% | 10 mph S | 42% | 2 | |
| 4 PM | Moderate rain at times | 65° | 60° | 70% | 12 mph NW | 79% | 1 | |
| 5 PM | Light rain shower | 66° | 69° | 59% | 1 mph ESE | 80% | 2 | |
| 6 PM | Patchy light drizzle | 64° | 65° | 37% | 3 mph NNW | 87% | 0 | |
| 7 PM | Patchy rain nearby | 65° | 66° | 36% | 2 mph ESE | 79% | 0 | |
| 8 PM | Patchy light rain | 59° | 60° | 58% | 2 mph SSE | 88% | 0 | |
| 9 PM | Patchy rain nearby | 64° | 64° | 24% | 5 mph SW | 88% | 0 | |
| 10 PM | Patchy rain nearby | 59° | 58° | 28% | 4 mph WSW | 85% | 0 | |
| 11 PM | Patchy rain nearby | 61° | 59° | 18% | 6 mph WNW | 76% | 0 |
Boulder hourly weather - Friday, August 14
In Boulder, expect a high near 85°F (30°C) around 1 PM and a low of 56°F (13°C) near 4 AM; precipitation risk peaks at 82% around 8 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 60° | 57° | 23% | 5 mph W | 74% | 0 | |
| 1 AM | Patchy rain nearby | 62° | 61° | 27% | 5 mph NNW | 77% | 0 | |
| 2 AM | Cloudy | 61° | 63° | 22% | 0 mph WSW | 85% | 0 | |
| 3 AM | Partly Cloudy | 61° | 63° | 15% | 1 mph SW | 83% | 0 | |
| 4 AM | Partly Cloudy | 56° | 55° | 14% | 2 mph WSW | 86% | 0 | |
| 5 AM | Clear | 56° | 54° | 12% | 3 mph SW | 83% | 0 | |
| 6 AM | Cloudy | 56° | 53° | 17% | 5 mph WSW | 78% | 0 | |
| 7 AM | Partly Cloudy | 59° | 56° | 12% | 6 mph WSW | 71% | 0 | |
| 8 AM | Patchy rain nearby | 70° | 70° | 12% | 4 mph W | 60% | 1 | |
| 9 AM | Sunny | 75° | 76° | 2% | 1 mph SE | 46% | 3 | |
| 10 AM | Sunny | 79° | 78° | 1% | 4 mph ESE | 39% | 5 | |
| 11 AM | Patchy rain nearby | 82° | 79° | 7% | 7 mph ESE | 34% | 7 | |
| 12 PM | Patchy rain nearby | 84° | 80° | 8% | 9 mph ESE | 31% | 9 | |
| 1 PM | Patchy rain nearby | 85° | 80° | 9% | 9 mph ESE | 30% | 6 | |
| 2 PM | Patchy light drizzle | 79° | 77° | 23% | 6 mph W | 40% | 3 | |
| 3 PM | Patchy light drizzle | 73° | 72° | 23% | 4 mph W | 49% | 1 | |
| 4 PM | Patchy rain nearby | 77° | 76° | 9% | 4 mph WNW | 45% | 1 | |
| 5 PM | Sunny | 82° | 78° | 1% | 7 mph E | 35% | 0 | |
| 6 PM | Patchy rain nearby | 76° | 73° | 10% | 9 mph ENE | 50% | 0 | |
| 7 PM | Patchy light rain | 70° | 70° | 60% | 4 mph NNW | 65% | 0 | |
| 8 PM | Moderate rain at times | 65° | 68° | 82% | 2 mph NNW | 85% | 0 | |
| 9 PM | Patchy rain nearby | 63° | 66° | 35% | 2 mph SSW | 90% | 0 | |
| 10 PM | Clear | 63° | 62° | 12% | 5 mph W | 82% | 0 | |
| 11 PM | Partly Cloudy | 64° | 64° | 12% | 3 mph W | 77% | 0 |
Boulder hourly weather - Saturday, August 15
In Boulder, expect a high near 78°F (26°C) around 1 PM and a low of 56°F (13°C) near 5 AM; precipitation risk peaks at 60% around 3 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Partly Cloudy | 64° | 64° | 9% | 3 mph SSW | 73% | 0 | |
| 1 AM | Partly Cloudy | 60° | 58° | 10% | 4 mph SW | 76% | 0 | |
| 2 AM | Partly Cloudy | 58° | 57° | 11% | 2 mph WSW | 78% | 0 | |
| 3 AM | Patchy rain nearby | 60° | 57° | 18% | 5 mph W | 71% | 0 | |
| 4 AM | Clear | 57° | 55° | 7% | 4 mph WSW | 72% | 0 | |
| 5 AM | Clear | 56° | 54° | 9% | 2 mph WSW | 76% | 0 | |
| 6 AM | Partly Cloudy | 56° | 53° | 11% | 5 mph WNW | 73% | 0 | |
| 7 AM | Partly Cloudy | 59° | 56° | 9% | 5 mph W | 69% | 0 | |
| 8 AM | Partly Cloudy | 69° | 69° | 6% | 2 mph S | 58% | 1 | |
| 9 AM | Patchy rain nearby | 72° | 71° | 9% | 2 mph SSE | 52% | 3 | |
| 10 AM | Patchy rain nearby | 75° | 73° | 8% | 4 mph SE | 46% | 5 | |
| 11 AM | Patchy rain nearby | 76° | 75° | 9% | 3 mph SE | 44% | 7 | |
| 12 PM | Patchy rain nearby | 77° | 76° | 8% | 4 mph E | 42% | 8 | |
| 1 PM | Patchy rain nearby | 78° | 77° | 8% | 4 mph E | 41% | 5 | |
| 2 PM | Patchy light drizzle | 76° | 76° | 36% | 2 mph WNW | 44% | 4 | |
| 3 PM | Moderate rain at times | 66° | 60° | 60% | 14 mph WSW | 68% | 6 | |
| 4 PM | Patchy rain nearby | 62° | 60° | 25% | 6 mph WSW | 75% | 4 | |
| 5 PM | Sunny | 71° | 71° | 4% | 2 mph E | 55% | 1 | |
| 6 PM | Partly Cloudy | 70° | 68° | 7% | 6 mph SSW | 60% | 0 | |
| 7 PM | Sunny | 70° | 69° | 5% | 4 mph SW | 62% | 0 | |
| 8 PM | Clear | 60° | 58° | 6% | 4 mph SW | 67% | 0 | |
| 9 PM | Clear | 61° | 58° | 5% | 5 mph W | 66% | 0 | |
| 10 PM | Clear | 60° | 56° | 5% | 6 mph W | 67% | 0 | |
| 11 PM | Clear | 59° | 55° | 5% | 5 mph W | 67% | 0 |
Quick answers for the hours ahead
What is the warmest hour in Boulder today?
2 PM is forecast to be the warmest, at about 82°F (28°C) with patchy rain nearby.
Will it rain in Boulder tonight?
Quite possibly - the chance of precipitation reaches 58% around 8 PM. Keep rain gear handy.
When is the UV index highest in Boulder today?
Around 12 PM, when it reaches 8. From UV 3 upward, sun protection is recommended.
Boulder hour-by-hour: what to expect
Over the next 24 hours in Boulder, temperatures range from 55°F (13°C) around 6 AM up to 82°F (28°C) near 2 PM - right in line with the typical August high of 83°F (28°C).
Precipitation is a real possibility: the chance of rain peaks at 70% around 4 PM. UV reaches 8 (12 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.
Hourly forecasts nearby