Skip to main content
One weather site to rule them all
checkweather.io

Derby weather

Loading live data…

NWSNational Blend (NBM)
59°
Mainly clear
Feels 55° · Wind 9 mph · Humidity 68%
AmericanNOAA GFS
59°
Mainly clear
Feels 55° · Wind 6 mph · Humidity 60%
EuropeanECMWF
60°
Clear
Feels 57° · Wind 7 mph · Humidity 63%

Latest for Derby: NWS (National Blend (NBM)): 59° Mainly clear · American (NOAA GFS): 59° Mainly clear · European (ECMWF): 60° Clear.

CheckWeather.io on iPhoneFree. No ads, no account.

Derby weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Derby…

Derby weather in numbers

measured normals and 10 years of recorded weather

Derby swings 64°F across the year, from 89°F highs in July to 25°F lows in January, and June is usually the wettest month in a year that brings about 37 in of precipitation. Over 10 years of recorded weather it averages 149 days a year at 77°F or above, 82 of them at 86°F or above, 75 frost nights, and rain on 88 days.

Warmest month
July
89°F average high
Coldest month
January
25°F average low
Wettest month
June
37 in a year
Comfortable
3 months
April, May and October
Residents
24,000
share this forecast
Warm days
149 days
a year at 77°F or above
Frost nights
75 nights
a year below 32°F
Rain days
88 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Derby’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

NWS, American, European side by side around Derby and nearby towns.Live rain radar →
Loading the three model maps…

Derby hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

Loading the three models…

Derby 10-day forecast, out to 14 days

where the models agree, and where they split

Derby, Kansas (KS) is at its warmest in Jul (average highs near 89°F) and coldest in Jan (lows around 25°F), with roughly 37 in of precipitation across the year. Below, compare what NWS, American, European forecast for Derby right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Derby climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
42°
25°
Feb
49°
27°
Mar
59°
38°
Apr
68°
46°
May
76°
56°
Jun
86°
67°
Jul
89°
70°
Aug
87°
69°
Sep
81°
60°
Oct
69°
49°
Nov
54°
37°
Dec
44°
27°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How the weather around Derby has changed since 1995

Derby sits in the same roughly 50 km square of NASA's reanalysis as Wichita. That square ran 1.6°F warmer in 2015-2024 than in 1995-2004. See the full 30-year picture on the Wichita page.

Which forecast is most accurate in the US?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
93
/100rank #1
91±0.9°F97±1.1 mph9396% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
82
/100rank #2
83±1.7°F94±2.0 mph7184% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
Loading ratings…
AmericanNOAA GFS
Loading ratings…
EuropeanECMWF
Loading ratings…

One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Derby today?
On this page we show what NWS, American, European each forecast for Derby today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Derby today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Derby and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Derby?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Derby forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Derby?
July is typically the warmest month in Derby, with average highs around 89°F.
How cold does Derby get?
The coldest month in Derby is January, when overnight lows average about 25°F.
How much rain does Derby get?
Derby sees roughly 37 in of precipitation a year, with June usually the wettest month.

Nearby

More US weather