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Denver weekend weather

This weekend in Denver, CO, model by model. Weekend forecasts are far enough out that the models often split - so we show you where.

Weekend

The models centre on about 74° across the weekend. Agreement is low - the weekend is genuinely up in the air at this range. Rain chance reaches 100% on at least one model.

Tomorrow

2026-09-19 — every model, side by side
NWSNational Blend (NBM)
75°
Heavy drizzle
High 75°·Low 56°·Rain 34%
AmericanNOAA GFS
81°
Light rain
High 81°·Low 56°·Rain 34%
EuropeanECMWF
72°
Drizzle
High 72°·Low 57°·Rain 100%

The models are 9° apart on this day. That is genuine uncertainty — any app showing you a single confident number is hiding it.

Sun

2026-09-20 — every model, side by side
NWSNational Blend (NBM)
70°
Light drizzle
High 70°·Low 54°·Rain 34%
AmericanNOAA GFS
75°
Light drizzle
High 75°·Low 50°·Rain 34%
EuropeanECMWF
69°
Light drizzle
High 69°·Low 53°·Rain 92%

The models range from 69° to 75°. Treat the middle of that range as the likely outcome and keep a backup plan.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±6°80° to 87°±32%35% to 67% chance
Tomorrow±9°72° to 81°±66%34% to 100% chance
Sun±6°69° to 75°±58%34% to 92% chance
Mon±10°69° to 80°±20%10% to 30% chance
Tue±8°76° to 84°±2%25% to 27% 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.

Common questions

Will it rain this weekend?
At least one model puts the weekend rain chance as high as 100%. Weekend forecasts sit far enough ahead that models frequently disagree on showers - when they do, no single app can honestly tell you it will or will not rain.
How reliable is a weekend forecast?
It depends how far away the weekend is. Forecast error grows steadily with lead time, so a Saturday forecast made on Friday is far stronger than one made the previous Monday. The honest signal is model agreement: when they converge the forecast is solid, and when they spread the weekend is genuinely uncertain.

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