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Current conditions

22.4° / 11.5° Light drizzle
Feels like
19.5° / 9.6°
Humidity
—
Wind
17.4 km/h (gusts 27.4)
UV index
5.0
Sunrise / sunset
07:20 / 18:09
Daylight
10.8 hrs
Last updated 19 hours ago

7-day forecast

7-day forecast
Date Weather High Low Feels like Precip Rain Wind UV
Fri 23 Oct Light drizzle 22.4° 11.5° 19.5° / 9.6° 0.0 mm 7% 17.4 km/h 5.0
Sat 24 Oct Overcast 14.0° 6.7° 10.8° / 4.3° 0.0 mm 55% 12.6 km/h 2.8
Sun 25 Oct Moderate rain 6.7° 2.6° 4.3° / 0.4° 6.5 mm 55% 7.6 km/h 1.1
Mon 26 Oct Fog 10.8° 2.8° 8.0° / 0.7° 0.0 mm 42% 9.5 km/h 3.4
Tue 27 Oct Overcast 16.6° 2.2° 12.8° / -0.5° 0.0 mm 20% 12.8 km/h 4.5
Wed 28 Oct Overcast 20.5° 4.3° 16.9° / 2.0° 0.0 mm 8% 17.4 km/h 3.2

Air quality

27
Good

US Air Quality Index

European AQI: 23

PM2.5
4.7 µg/m³
PM10
5.1 µg/m³
Ozone (O₃)
65.0 µg/m³
NOâ‚‚
6.4 µg/m³
SOâ‚‚
0.7 µg/m³
CO
144.0 µg/m³
UV index
2.7
Dust
0.0 µg/m³
Measured 13 hours ago. Source: Open-Meteo.

Climate through the year

Now: October
-10° 0° 10° 20° 30° Jan: 25 mm Feb: 38 mm Mar: 56 mm Apr: 49 mm May: 99 mm Jun: 40 mm Jul: 25 mm Aug: 32 mm Sep: 27 mm Oct: 20 mm Nov: 25 mm Dec: 24 mm Jan: 2°C / -9°C Feb: 3°C / -10°C Mar: 9°C / -5°C Apr: 14°C / -0°C May: 19°C / 6°C Jun: 26°C / 12°C Jul: 30°C / 15°C Aug: 29°C / 14°C Sep: 26°C / 11°C Oct: 18°C / 4°C Nov: 10°C / -2°C Dec: 8°C / -4°C Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Average high and low, °C Rainfall, mm

Temperature by month

Precipitation and rain days

Sunshine, UV and humidity

Best months to visit

Best months to visit
Month Rating Avg high Avg low Rain days Sun (hrs) Humidity
September Excellent · 93 26.0°C 10.5°C 5.2 336.0 47.4%
June Excellent · 91 26.4°C 12.1°C 6.8 378.0 52.5%
July Good · 75 30.0°C 14.8°C 6.0 406.1 48.8%
October Good · 71 18.3°C 4.3°C 4.1 303.8 50.4%
August Good · 69 28.9°C 14.4°C 8.1 378.2 51.5%
May Good · 62 19.0°C 5.5°C 12.2 362.7 60.0%
November Fair · 53 10.4°C -2.3°C 4.6 252.0 53.5%
February Fair · 49 3.1°C -9.9°C 6.8 249.2 59.5%
December Fair · 49 7.9°C -3.9°C 4.1 235.6 52.1%
January Fair · 46 2.3°C -9.3°C 5.6 235.6 60.5%
March Fair · 42 8.8°C -4.6°C 8.5 297.6 58.9%
April Fair · 42 14.4°C -0.3°C 9.0 324.0 54.2%
Ratings based on temperature comfort, rainfall, sunshine and humidity for remote workers.

Monthly climate data

Monthly climate data for Boulder
Month High Low Mean Feels high Feels low Precip Rain days Snow Sun Daylight UV Humidity Wind Clouds
Jan 2.3° -9.3° -3.5° -1.8° -13.9° 25.1 mm 5.6 17.3 cm 235.6 hrs 9.7 hrs — 60.5% 15.0 km/h 60.7%
Feb 3.1° -9.9° -3.3° -0.7° -14.8° 38.1 mm 6.8 25.4 cm 249.2 hrs 10.7 hrs — 59.5% 16.6 km/h 56.9%
Mar 8.8° -4.6° 1.8° 5.4° -9.0° 56.0 mm 8.5 29.3 cm 297.6 hrs 12.0 hrs — 58.9% 16.4 km/h 60.7%
Apr 14.4° -0.3° 6.8° 11.6° -4.3° 48.5 mm 9.0 16.4 cm 324.0 hrs 13.3 hrs — 54.2% 18.0 km/h 53.4%
May 19.0° 5.5° 12.2° 17.5° 2.7° 98.7 mm 12.2 6.4 cm 362.7 hrs 14.4 hrs — 60.0% 16.7 km/h 56.2%
Jun 26.4° 12.1° 19.2° 26.1° 10.2° 40.1 mm 6.8 0.1 cm 378.0 hrs 15.0 hrs — 52.5% 15.7 km/h 45.5%
Jul 30.0° 14.8° 22.4° 29.8° 13.7° 25.3 mm 6.0 0.0 cm 406.1 hrs 14.7 hrs — 48.8% 16.4 km/h 40.0%
Aug 28.9° 14.4° 21.4° 28.6° 13.2° 32.1 mm 8.1 0.0 cm 378.2 hrs 13.7 hrs — 51.5% 14.8 km/h 40.5%
Sep 26.0° 10.5° 17.8° 24.2° 8.2° 27.1 mm 5.2 0.0 cm 336.0 hrs 12.4 hrs — 47.4% 15.1 km/h 33.2%
Oct 18.3° 4.3° 10.8° 14.9° 1.2° 19.8 mm 4.1 3.3 cm 303.8 hrs 11.1 hrs — 50.4% 14.5 km/h 37.1%
Nov 10.4° -2.3° 3.6° 6.5° -6.4° 24.5 mm 4.6 13.6 cm 252.0 hrs 10.0 hrs — 53.5% 14.7 km/h 55.5%
Dec 7.9° -3.9° 1.6° 3.7° -8.2° 24.0 mm 4.1 13.0 cm 235.6 hrs 9.4 hrs — 52.1% 17.6 km/h 62.9%
Based on historical averages. Source: Open-Meteo.

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