Observed 4:35 AM MDT at KBDU
Boulder, CO weather
Clear and 55°13°, 14°8° warmer than a typical Oct 23.
Today: low 53°12° (likely 49°9° to 58°14°), high 77°25° (likely 72°22° to 79°26°).
Now 55°13°
Clear
- Wind
- 3 mph5 km/h
- From the west. 35–8 mph13 km/h through 5 PM
- Dew point
- 45°7°
- Comfortable · down to 36°2° by 3 PM
- UV index
- 0Low
- Moderate 11 AM–4 PM · peak 4
- Air quality
- 68Moderate
- Main pollutant: PM10 (dust)
- Pressure
- 29.87 inHg1012 hPa
- Falling · −0.05 inHg−1.6 hPa in 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
This morningUp to 69°21° by 11 AM · rain chance 20% · Partly cloudy
This afternoonUp to 77°25° by 3 PM · Clear
TonightDown to 48°9° by 5 AM · Partly cloudy
Tomorrow morningNear 50°10° · rain chance 10% · Mostly cloudy
Tomorrow afternoonNear 53°12° · rain chance 20% · Cloudy
Tomorrow nightDown to 41°5° by 3 AM · rain chance 40% · Cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Fri 5a | Cloudy | 53°12° (likely 50°10° to 59°15°) | 53°12° | 20% | 5 mph8 km/h from WSW, gusts 10 mph16 km/h | 74% | 69% | 0 |
| Fri 6a | Cloudy | 53°12° (likely 50°10° to 59°15°) | 53°12° | 5% | 5 mph8 km/h from WSW, gusts 10 mph17 km/h | 74% | 74% | 0 |
| Fri 7a | Mostly cloudy | 53°12° (likely 50°10° to 60°16°) | 53°12° | 5% | 5 mph8 km/h from SW, gusts 10 mph16 km/h | 71% | 56% | 0 |
| Fri 8a | Sunny | 53°12° (likely 51°11° to 60°16°) | 53°12° | 5% | 5 mph8 km/h from SW, gusts 8 mph13 km/h | 71% | 17% | 0 |
| Fri 9a | Mostly cloudy | 58°14° (likely 56°13° to 64°18°) | 58°14° | 5% | 5 mph8 km/h from SW, gusts 10 mph17 km/h | 60% | 31% | 0 |
| Fri 10a | Sunny | 65°18° (likely 63°17° to 68°20°) | 65°18° | 5% | 5 mph8 km/h from SSW, gusts 7 mph11 km/h | 46% | 3% | 1 |
| Fri 11a | Sunny | 69°21° (likely 67°19° to 71°22°) | 69°21° | 5% | 5 mph8 km/h from S, gusts 10 mph17 km/h | 39% | 1% | 3 |
| Fri 12p | Sunny | 73°23° (likely 70°21° to 74°23°) | 73°23° | 0% | 6 mph10 km/h from S, gusts 14 mph22 km/h | 31% | 0% | 4 |
| Fri 1p | Sunny | 74°23° (likely 71°22° to 76°24°) | 74°23° | 0% | 6 mph10 km/h from S, gusts 14 mph22 km/h | 28% | 11% | 4 |
| Fri 2p | Partly sunny | 76°24° (likely 72°22° to 79°26°) | 76°24° | 0% | 7 mph11 km/h from WSW, gusts 16 mph26 km/h | 24% | 11% | 4 |
| Fri 3p | Partly sunny | 77°25° (likely 72°22° to 79°26°) | 77°25° | 0% | 8 mph13 km/h from WSW, gusts 16 mph25 km/h | 23% | 17% | 3 |
| Fri 4p | Partly sunny | 76°24° (likely 71°22° to 78°26°) | 76°24° | 0% | 8 mph13 km/h from W, gusts 12 mph20 km/h | 22% | 17% | 2 |
| Fri 5p | Partly sunny | 74°23° (likely 69°21° to 74°23°) | 74°23° | 0% | 8 mph13 km/h from W, gusts 14 mph23 km/h | 25% | 63% | 1 |
| Fri 6p | Partly cloudy | 70°21° (likely 64°18° to 70°21°) | 70°21° | 0% | 7 mph11 km/h from W, gusts 18 mph29 km/h | 30% | 69% | 0 |
| Fri 7p | Partly cloudy | 64°18° (likely 59°15° to 65°18°) | 64°18° | 0% | 8 mph13 km/h from W, gusts 18 mph29 km/h | 37% | 77% | 0 |
| Fri 8p | Cloudy | 62°17° (likely 56°13° to 64°18°) | 62°17° | 0% | 9 mph14 km/h from W, gusts 21 mph33 km/h | 39% | 73% | 0 |
| Fri 9p | Partly cloudy | 60°16° (likely 53°12° to 62°17°) | 60°16° | 0% | 10 mph16 km/h from W, gusts 18 mph29 km/h | 42% | 75% | 0 |
| Fri 10p | Mostly clear | 58°14° (likely 52°11° to 62°17°) | 58°14° | 0% | 8 mph13 km/h from W, gusts 22 mph35 km/h | 44% | 79% | 0 |
| Fri 11p | Mostly clear | 56°13° (likely 51°11° to 60°16°) | 56°13° | 0% | 7 mph11 km/h from W, gusts 19 mph31 km/h | 49% | 54% | 0 |
| Sat 12a | Mostly clear | 55°13° (likely 50°10° to 59°15°) | 55°13° | 0% | 6 mph10 km/h from W, gusts 14 mph22 km/h | 51% | 38% | 0 |
| Sat 1a | Mostly clear | 54°12° (likely 49°9° to 56°13°) | 54°12° | 0% | 5 mph8 km/h from W, gusts 6 mph9 km/h | 52% | 29% | 0 |
| Sat 2a | Clear | 53°12° (likely 47°8° to 56°13°) | 53°12° | 0% | 5 mph8 km/h from W, gusts 10 mph16 km/h | 54% | 29% | 0 |
| Sat 3a | Clear | 51°11° (likely 47°8° to 55°13°) | 51°11° | 0% | 5 mph8 km/h from W, gusts 10 mph16 km/h | 56% | 31% | 0 |
| Sat 4a | Cloudy | 50°10° (likely 47°8° to 54°12°) | 49°9° | 0% | 3 mph5 km/h from W, gusts 9 mph14 km/h | 58% | 69% | 0 |
| Sat 5a | Cloudy | 48°9° (likely 47°8° to 53°12°) | 48°9° | 0% | 2 mph3 km/h from SW, gusts 6 mph10 km/h | 63% | 73% | 0 |
| Sat 6a | Cloudy | 48°9° (likely 47°8° to 53°12°) | 47°8° | 10% | 3 mph5 km/h from SSW, gusts 6 mph9 km/h | 63% | 80% | 0 |
| Sat 7a | Partly sunny | 47°8° (likely 46°8° to 52°11°) | 46°8° | 10% | 3 mph5 km/h from NNW, gusts 14 mph22 km/h | 68% | 73% | 0 |
| Sat 8a | Mostly cloudy | 47°8° (likely 46°8° to 52°11°) | 46°8° | 10% | 3 mph5 km/h from S, gusts 9 mph14 km/h | 68% | 63% | 0 |
| Sat 9a | Cloudy | 49°9° (likely 46°8° to 52°11°) | 47°8° | 10% | 6 mph10 km/h from ENE, gusts 9 mph15 km/h | 71% | 75% | 1 |
| Sat 10a | Partly sunny | 50°10° (likely 46°8° to 53°12°) | 48°9° | 10% | 6 mph10 km/h from ENE, gusts 10 mph17 km/h | 66% | 64% | 2 |
| Sat 11a | Mostly sunny | 51°11° (likely 46°8° to 53°12°) | 51°11° | 10% | 6 mph10 km/h from ENE, gusts 10 mph16 km/h | 63% | 48% | 3 |
| Sat 12p | Cloudy | 52°11° (likely 46°8° to 53°12°) | 52°11° | 20% | 6 mph10 km/h from E, gusts 10 mph15 km/h | 59% | 81% | 4 |
| Sat 1p | Cloudy | 52°11° (likely 46°8° to 54°12°) | 52°11° | 20% | 6 mph10 km/h from ENE, gusts 9 mph15 km/h | 59% | 84% | 4 |
| Sat 2p | Cloudy | 53°12° (likely 46°8° to 54°12°) | 53°12° | 20% | 5 mph8 km/h from ENE, gusts 7 mph12 km/h | 54% | 87% | 4 |
| Sat 3p | Cloudy | 53°12° (likely 46°8° to 54°12°) | 53°12° | 20% | 6 mph10 km/h from ENE, gusts 6 mph10 km/h | 54% | 87% | 3 |
| Sat 4p | Cloudy | 53°12° (likely 46°8° to 54°12°) | 53°12° | 20% | 5 mph8 km/h from E, gusts 6 mph9 km/h | 52% | 90% | 2 |
| Sat 5p | Cloudy | 53°12° (likely 45°7° to 53°12°) | 53°12° | 20% | 5 mph8 km/h from E, gusts 6 mph10 km/h | 50% | 97% | 1 |
| Sat 6p | Cloudy | 50°10° (likely 42°6° to 51°11°) | 49°9° | 40% | 3 mph5 km/h from E, gusts 6 mph10 km/h | 56% | 99% | 0 |
| Sat 7p | Cloudy | 48°9° (likely 41°5° to 49°9°) | 48°9° | 40% | 2 mph3 km/h from E, gusts 4 mph7 km/h | 65% | 93% | 0 |
| Sat 8p | Cloudy | 47°8° (likely 40°4° to 47°8°) | 47°8° | 40% | 1 mph2 km/h from E, gusts 3 mph5 km/h | 68% | 96% | 0 |
| Sat 9p | Cloudy | 46°8° (likely 40°4° to 47°8°) | 46°8° | 40% | 1 mph2 km/h from E, gusts 5 mph8 km/h | 71% | 98% | 0 |
| Sat 10p | Cloudy | 46°8° (likely 39°4° to 47°8°) | 46°8° | 40% | 1 mph2 km/h from E, gusts 4 mph6 km/h | 71% | 93% | 0 |
| Sat 11p | Cloudy | 45°7° (likely 41°5° to 46°8°) | 45°7° | 40% | 0 mph0 km/h, gusts 4 mph7 km/h | 76% | 88% | 0 |
| Sun 12a | Cloudy | 44°7° (likely 41°5° to 46°8°) | 44°7° | 30% | 0 mph0 km/h, gusts 5 mph8 km/h | 79% | 86% | 0 |
| Sun 1a | Showers | 43°6° (likely 41°5° to 45°7°) | 43°6° | 30% | 0 mph0 km/h, gusts 6 mph9 km/h | 82% | 75% | 0 |
| Sun 2a | Cloudy | 42°6° (likely 40°4° to 45°7°) | 42°6° | 30% | 0 mph0 km/h, gusts 4 mph7 km/h | 86% | 84% | 0 |
| Sun 3a | Showers | 41°5° (likely 40°4° to 44°7°) | 41°5° | 30% | 0 mph0 km/h, gusts 3 mph5 km/h | 89% | 83% | 0 |
| Sun 4a | Cloudy | 41°5° (likely 40°4° to 43°6°) | 41°5° | 30% | 0 mph0 km/h, gusts 5 mph8 km/h | 89% | 84% | 0 |
Days ahead
Today, Oct 23. Partly sunny. High 77°25°, low 53°12°. Typical 63°17° / 30°−1°. Dry. Forecasts differ.
Morning
6 AM–noon
Mostly cloudy, 53°12°Dry
Afternoon
noon–6 PM
Partly sunny, 77°25°Dry
Evening
6 PM–midnight
Partly cloudy, 62°17°Dry
Overnight
midnight–6 AM
Clear, 48°9°Dry
Official NWS forecast
Today: Mostly sunny. High near 77, with temperatures falling to around 74 in the afternoon. Southwest wind 5 to 8 mph.
Tonight: A slight chance of rain showers. Mostly cloudy, with a low around 53. West southwest wind around 5 mph. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 72°22°–79°26°
- Low, likely
- 49°9°–58°14°
- Typical high / low
- 63°17° / 30°−1°
- Wind
- 19 mph30 km/h, gusts 33 mph53 km/h
- UV peak
- 5
Tomorrow, Oct 24. Cloudy. High 54°12°, low 39°4°. Typical 62°17° / 30°−1°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 53°12°20% chance
Evening
6 PM–midnight
Cloudy, 47°8°40% chance
Overnight
midnight–6 AM
Showers, 41°5°30% chance
Official NWS forecast
Day: A slight chance of rain showers after noon. Partly sunny, with a high near 54. East wind around 6 mph. Chance of precipitation is 20%.
Night: A chance of rain showers. Mostly cloudy, with a low around 39. East northeast wind 0 to 3 mph. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 51°11°–59°15°
- Low, likely
- 39°4°–46°8°
- Typical high / low
- 62°17° / 30°−1°
- Wind
- 14 mph22 km/h, gusts 19 mph31 km/h
- UV peak
- 4
Sunday, Oct 25. Mostly cloudy. High 55°13°, low 41°5°. Typical 62°17° / 30°−1°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 41°5°20% chance
Afternoon
noon–6 PM
Sunny, 56°13°Dry
Evening
6 PM–midnight
Drizzle, 48°9°50% chance · 0.09 in2.2 mm
Overnight
midnight–6 AM
Drizzle, 44°7°40% chance · 0.04 in1.1 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers after noon. Mostly cloudy, with a high near 55. Chance of precipitation is 20%.
Night: A chance of rain showers. Mostly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 50°10°–58°14°
- Low, likely
- 36°2°–41°5°
- Typical high / low
- 62°17° / 30°−1°
- Wind
- 11 mph18 km/h, gusts 17 mph28 km/h
- UV peak
- 5
Monday, Oct 26. Showers. High 58°14°, low 38°3°. Typical 62°17° / 30°−1°. Rain 0.09 in2.3 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Drizzle, 44°7°40% chance · 0.02 in0.4 mm
Afternoon
noon–6 PM
Drizzle, 56°13°20% chance
Evening
6 PM–midnight
Clear, 47°8°Dry
Overnight
midnight–6 AM
Clear, 40°5°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 58.
Night: A slight chance of rain showers before midnight. Partly cloudy, with a low around 38.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 49°9°–60°16°
- Low, likely
- 38°3°–43°6°
- Typical high / low
- 62°17° / 30°−1°
- Wind
- 7 mph12 km/h, gusts 23 mph37 km/h
- UV peak
- 4
Tuesday, Oct 27. Mostly sunny. High 64°18°, low 40°4°. Typical 61°16° / 29°−2°. Dry. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 44°7°Dry
Afternoon
noon–6 PM
Sunny, 64°18°Dry
Evening
6 PM–midnight
Clear, 52°11°Dry
Overnight
midnight–6 AM
Clear, 45°7°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Mostly clear, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 60°16°–68°20°
- Low, likely
- 36°2°–43°6°
- Typical high / low
- 61°16° / 29°−2°
- Wind
- 8 mph13 km/h, gusts 23 mph36 km/h
- UV peak
- 5
Wednesday, Oct 28. Partly sunny. High 64°18°, low 40°4°. Typical 61°16° / 29°−2°. Dry. Forecasts differ.
Morning
6 AM–noon
Sunny, 47°8°Dry
Afternoon
noon–6 PM
Sunny, 61°16°Dry
Evening
6 PM–midnight
Clear, 49°10°Dry
Overnight
midnight–6 AM
Cloudy, 41°5°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 64.
Night: Partly cloudy, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 58°14°–65°18°
- Low, likely
- 39°4°–46°8°
- Typical high / low
- 61°16° / 29°−2°
- Wind
- 15 mph24 km/h, gusts 32 mph51 km/h
- UV peak
- 4
Thursday, Oct 29. Cloudy. High 61°16°, low 40°4°. Typical 60°16° / 29°−2°. Dry. Forecasts differ.
Morning
6 AM–noon
Cloudy, 44°7°Dry
Afternoon
noon–6 PM
Cloudy, 57°14°Dry
Evening
6 PM–midnight
Cloudy, 47°8°Dry
Overnight
midnight–6 AM
Mostly clear, 41°5°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 61.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 49°9°–64°18°
- Low, likely
- 36°2°–46°8°
- Typical high / low
- 60°16° / 29°−2°
- Wind
- 8 mph13 km/h, gusts 16 mph25 km/h
- UV peak
- 4
Friday, Oct 30. Rain. High 55°13°, low 38°3°. Typical 60°16° / 28°−2°. Rain 0.06 in1.5 mm, 10% chance. Forecasts differ.
Morning
6 AM–noon
Partly sunny, 41°5°Dry
Afternoon
noon–6 PM
Cloudy, 54°12°Dry
Evening
6 PM–midnight
Rain, 45°7°Dry
Overnight
midnight–6 AM
Fog, 40°4°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 40°4°–65°18°
- Low, likely
- 32°0°–46°8°
- Typical high / low
- 60°16° / 28°−2°
- Wind
- 7 mph12 km/h, gusts 17 mph27 km/h
- UV peak
- 3
Saturday, Oct 31. Drizzle. High 58°14°, low 39°4°. Typical 60°16° / 28°−2°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 44°7°Dry
Afternoon
noon–6 PM
Sunny, 60°16°Dry
Evening
6 PM–midnight
Clear, 48°9°Dry
Overnight
midnight–6 AM
Clear, 41°5°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 50°10°–66°19°
- Low, likely
- 34°1°–45°7°
- Typical high / low
- 60°16° / 28°−2°
- Wind
- 9 mph14 km/h, gusts 19 mph30 km/h
- UV peak
- 4
Sunday, Nov 1. Sunny. High 55°13°, low 38°3°. Typical 59°15° / 28°−2°. Rain 0.05 in1.3 mm, 20% chance. Forecasts differ.
Morning
6 AM–noon
Sunny, 46°8°Dry
Afternoon
noon–6 PM
Sunny, 60°15°20% chance
Evening
6 PM–midnight
Clear, 46°8°20% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 50°10°–62°17°
- Low, likely
- 31°−1°–45°7°
- Typical high / low
- 59°15° / 28°−2°
- Wind
- 10 mph16 km/h, gusts 18 mph29 km/h
- UV peak
- 4
The outlook
Today
Dry, high 77°, low 53°.
Tomorrow
Dry, high 54°, low 39°, cooling off.
Sunday
Dry, high 55°, low 41°.
Rest of week
Mostly dry, highs 55–64°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (BOU) (opens in a new tab)
What changed since yesterday
No meaningful changes from yesterday’s forecast.
Radar
For your home
What this week’s weather means for heating, cooling, pipes and fresh air.
Heating this week
About 83% less heating than a typical week.
Heating degree days, base 65°F
Heat-pump hours, next 7 days
- h below 47°F
- 11
- h below 17°F
- 0
- h below 5°F
- 0
47, 17 and 5°F are the test points heat pumps are rated at. About 3 hours are near freezing and damp, when outdoor units defrost more often.
Comfort
Dry air outside (dew point 45°F).
Open the windows?
Today, 10:00 AM–9:00 PM
Good stretch to open the windows.
Is this typical?
Oct 23, today vs a typical year
Today’s expected high is 14°8° warmer than typical.
- Normal high / low
- 63°17° / 30°−1°
- Forecast high / low
- 77°25° / 53°12°
- Record high
- 86°30° in 2003
- Record low
- 16°−9° in 1920
Last 7 days vs normal
On average 6°3° warmer than normal (daily mean temperature).
- −4°−2°SatOct 17
- +5°+3°SunOct 18
- +9°+5°MonOct 19
- +6°+3°TueOct 20
- +9°+5°WedOct 21
- +13°+7°ThuOct 22
- —FriOct 23
Boulder weather by month: normals, records, snow and freeze dates
Sun & moon
Sun
Sunrise 7:20 AM, sunset 6:09 PM.
- Daylight
- 10 h 50 min
- Losing 2 min 25 s a day; shortest Dec 21, 1 h 30 min less
- Golden hour
- 5:32–6:26 PM
- Morning 7:03–7:57 AM
- Blue hour
- 6:26–6:37 PM
- Morning 6:52–7:03 AM; first light 6:52 AM
Stars tonight? Poor
Clouds most of the night (about 72% cover).
Moon
Waxing gibbous
91% lit · growing
- Today
- sets 4:30 AM · rises 4:42 PM
- Full moon
- Oct 25
- New moon
- Nov 9
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