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Thunderstorm Chances Focus on Today, Tuesday in Colby

August 22, 2026 weather, forecast

Colby, Kansas — The next seven days bring highs ranging from 88°F to 97°F, lows from 63°F to 69°F, rain chances focused on Today, Wednesday and Thursday. Today's forecast is still included below, but the main story is the week ahead.

What Matters Most This Week

Warmest day: Monday, with a high near 97°F.
Coolest morning: Wednesday, with a low near 63°F.
Rain chances: Best chances on Today, Wednesday and Thursday; seven-day expected rainfall totals about 0.61 inches.
Storm watch: Thunderstorm chances appear in the forecast on Today, Tuesday, Wednesday and Thursday.
Windiest stretch: Tuesday, with gusts up to 44 mph.
Sun safety: UV runs high on Today, Sunday, Monday and Tuesday and other days.

7-Day Forecast

Day	Conditions	High / Low	Rain	Peak Gust
Today 8/22	Slight Chance Showers And Thunderstorms then Mostly Sunny	91° / 66°	20% / 0.18"	22 mph
Sunday 8/23	Mostly Sunny	91° / 66°	14% / 0.02"	21 mph
Monday 8/24	Sunny	97° / 67°	4%	17 mph
Tuesday 8/25	Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms	92° / 64°	22% / 0.02"	44 mph
Wednesday 8/26	Chance Showers And Thunderstorms then Mostly Sunny	88° / 63°	25% / 0.26"	36 mph
Thursday 8/27	Slight Chance Showers And Thunderstorms then Mostly Sunny	92° / 64°	20% / 0.10"	20 mph
Friday 8/28	Sunny	94° / 69°	10% / 0.04"	32 mph

Today's Details — Saturday, August 22

Conditions: Slight Chance Showers And Thunderstorms then Mostly Sunny
High / Low: 91°F / 66°F
Wind: ESE 15 mph, gusts to 22 mph
Precipitation: 20% chance, 0.18 inches expected over 2 hours
UV Index: 7.75 — Very High — limit outdoor exposure
Sunrise / Sunset: 07:03 / 20:30
Daylight: 13.4 hours

What Matters Most Today

Expected rainfall: about 0.18 inches.
Sun safety: UV index reaches 7.75; sunscreen still matters even with cloud cover.
Best outdoor window: Midday (lowest average rain risk).

Comfort & Conditions

Humidity: 64%
Dew Point: Up to 69°F — muggy conditions

Hour-by-Hour Breakdown

Morning (6AM–Noon): Clear sky, 69°F, 14% chance of precipitation, 80% humidity
Afternoon (Noon–6PM): Clear sky, 87°F, winds 10 mph, 58% humidity
Evening (6PM–Midnight): Clear sky, 84°F, 53% humidity

Air Quality & Allergens

Air Quality Index: 39 (peak 58) — Moderate
Acceptable air quality; some pollutants may be a concern for sensitive individuals.
PM2.5: 6.9 µg/m³

Forecast data provided by Open-Meteo. Air quality data from Open-Meteo Air Quality API. For severe weather alerts, visit your local National Weather Service office.