Skip to main content
Every US forecast, compared
checkweather.io
CheckWeather USNampa
Forecast confidence: High · models disagree by 2°F

Nampa weather

Loading live data…

Fog,rain likely tomorrow

NWS, the American and the European model agree on a high near 73° in Nampa today. Tomorrow looks drizzle around 77°, with a 65% chance of rain.

73°48°
77°52°
70°52°
77°50°
82°53°
88°58°
Todaymodels agreeTomorrowsplit ±5°Mondaymodels agreeTuesdaymodels agreeWednesdaysplit ±7°Thursdaysplit ±11°
NWSNational Blend (NBM)
74°
Fog
Today 74°·Low 49°·Rain 13%
AmericanNOAA GFS
75°
Fog
Today 75°·Low 48°·Rain 13%
EuropeanECMWF
72°
Drizzle
Today 72°·Low 48°·Rain 29%

The weather map: all three models at once

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

Next 14 hours

consensus of the three models

14-day forecast

where the models agree, and where they split
Today
Fog
73° 48°
models agree
Tomorrow
Drizzle
77° 52°
±5°
Mon
Cloudy
70° 52°
models agree
Tue
Clear
77° 50°
models agree
Wed
Mostly clear
82° 53°
±7°
Thu
Mostly clear
88° 58°
±11°
Fri
Partly cloudy
80° 60°
±5°
Sat
Mostly clear
73° 54°
±6°
Sun
Clear
76° 51°
±8°
Mon
Mostly clear
83° 53°
±9°
Tue
Mostly clear
86° 57°
±13°
Wed
Partly cloudy
90° 62°
models agree
Thu
Mostly clear
86° 59°
±8°
Fri
Partly cloudy
80° 55°
±16°

Nampa, ID is at its warmest in Jul (average highs near 97°F) and coldest in Jan (lows around 25°F), with roughly 16 in of precipitation across the year. Below, compare what NWS, American, European forecast for Nampa 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.

Nampa climate by month

average daytime high and overnight low across a typical year
Jan
39°
25°
Feb
47°
29°
Mar
50°
31°
Apr
61°
39°
May
74°
49°
Jun
83°
58°
Jul
97°
68°
Aug
91°
64°
Sep
81°
56°
Oct
67°
44°
Nov
49°
33°
Dec
41°
29°

Which forecast is most accurate in Nampa?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
91
/100rank #1
94±0.6°F98±0.7 mph8290% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
90
/100rank #2
87±1.3°F95±1.7 mph8994% 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.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°72° to 75°±16%13% to 29% chance
Tomorrow±5°75° to 80°±46%19% to 65% chance
Mon±2°70° to 72°±19%26% to 45% chance
Tue±3°76° to 79°models agree0% to 0% chance
Wed±7°78° to 85°models agree0% to 0% chance

The models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Nampa

today, local time
Sunrise
07:15
Sunset
20:14
Daylight
12h 59m

Common questions

What's the weather in Nampa today?
On this page we show what NWS, American, European each forecast for Nampa 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 Nampa today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Nampa 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 Nampa?
Over the last 30 days, the European model has been the most accurate for Nampa (CheckWeather Score 91/100), ahead of the American at 90. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Nampa?
July is typically the warmest month in Nampa, with average highs around 97°F.
How cold does Nampa get?
The coldest month in Nampa is January, when overnight lows average about 25°F.
How much rain does Nampa get?
Nampa sees roughly 16 in of precipitation a year, with December usually the wettest month.

Nearby

More US weather