Today
Mostly clear throughout the day, high +70°, low +55°. Wind gusts reach 4 mph. No rain expected.
Weather in Derby
United States · Colorado · 39.8394, -104.9186
Today Now 5:07 PM
+70° Mostly clear
Hourly forecast
Today10/20
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow partly cloudy: daytime +75°, nighttime +48°, 5° warmer.
Week
This week temperatures range from +34° to +79°. Warmest day — Fri, up to +79°. Coldest night — Tue, around +34°. Rain on Thu, Sat, Sun, Mon, Tue. Second half of the week is cooler.
Week vs norm
- Today 10/20 +70° +6° usually +64°
- Tomorrow 10/21 +75° +12° usually +63°
- Thu 10/22 +72° +9° usually +63°
- Fri 10/23 +79° +16° usually +62°
- Sat 10/24 +57° −5° usually +62°
- Sun 10/25 +52° −10° usually +61°
- Mon 10/26 +45° −16° usually +61°
- Tue 10/27 +45° −16° usually +60°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 20
Today is a typical day for this date.
- Heat record +84° 2023
- Cold record +23° 1999
- Most precipitation 0.2 in 1996
- Strongest gust 43 mph 2019
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Derby
Today is about 3° warmer than usual for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +40° / +17° | +26° | 0.8 |
| Feb | +44° / +19° | +29° | 0.9 |
| Mar | +54° / +26° | +38° | 1.8 |
| Apr | +62° / +33° | +46° | 2.5 |
| May | +70° / +43° | +56° | 3.1 |
| Jun | +82° / +53° | +67° | 2.0 |
| Jul | +88° / +60° | +73° | 1.6 |
| Aug | +86° / +58° | +71° | 1.5 |
| Sep | +79° / +51° | +64° | 1.3 |
| Oct | +66° / +38° | +50° | 1.4 |
| Nov | +51° / +26° | +36° | 1.1 |
| Dec | +41° / +18° | +27° | 0.8 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:15 AM | 6:12 PM
Moon
3:31 PM | 1:14 AM
Moon phase
Waxing gibbous 70%
Next solar eclipse
Calculating for this city…