Weather Alert
Big Johnson Reservoir Weather Warning NWS WEATHER ALERT FOR THE BIG JOHNSON RESERVOIR, CO AREA - Issued: 107 AM MDT Thu Sep 24 2026 Big Johnson Reservoir Weather Warning

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Big Johnson Reservoir, CO Weather - Hour by Hour Forecast

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Big Johnson Reservoir, CO Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Cloudy. Temperature is 60°F16°C, dew point 52°F11°C, humidity 74%. Wind direction is NNW at 12 mph19 km/h with visibility of 10 mi16 km. Barometric pressure is 30.31 in1026 mb.
Today - Mostly cloudy with chance of showers and slight chance of thunderstorms. Highs 65 to 72. North winds 10 to 15 mph. Chance of preci.. Full Forecast
Tonight - Mostly cloudy. Chance of rain showers and slight chance of thunderstorms until midnight, then slight chance of rain showers after .. Full Forecast

Big Johnson Reservoir Hourly Weather

24 Hour Forecast Scroll
Thu, Sep 24
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Big Johnson Reservoir, CO Hourly Weather - Cloudy - 9:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 10:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 11:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 12:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 1:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 2:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 3:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 4:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 5:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 6:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 7:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 8:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 9:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 10:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 11:00 PM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 12:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 1:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 2:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 3:00 AM Big Johnson Reservoir, CO Hourly Weather - Cloudy - 4:00 AM Big Johnson Reservoir, CO Hourly Weather - Mostly Cloudy - 5:00 AM Big Johnson Reservoir, CO Hourly Weather - Mostly Cloudy - 6:00 AM Big Johnson Reservoir, CO Hourly Weather - Mostly Cloudy - 7:00 AM Big Johnson Reservoir, CO Hourly Weather - Mostly Cloudy - 8:00 AM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy
60°F16°C 62°F17°C 64°F18°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 66°F19°C 64°F18°C 63°F17°C 62°F17°C 60°F16°C 59°F15°C 59°F15°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 56°F13°C 58°F14°C
Rain Rain Rain Rain - - - - - - Rain Rain Rain Rain Rain Rain - - - - - - - -
21% 21% 21% 21% 18% 18% 18% 18% 18% 18% 24% 24% 24% 24% 24% 24% 17% 17% 17% 17% 17% 17% 2% 2%
51°F11°C 51°F11°C 50°F10°C 50°F10°C 50°F10°C 49°F9°C 49°F9°C 49°F9°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 50°F10°C 49°F9°C 49°F9°C 49°F9°C 49°F9°C
72% 67% 60% 56% 56% 52% 52% 54% 60% 63% 65% 70% 72% 72% 75% 75% 77% 77% 80% 80% 80% 80% 77% 72%
NNW SW SE N SE SW NNW NNW NW NW SSW SSE ENE SSE SSW N SSW SE N NE NE ENE E SE
5 mph 5 mph 8 mph 8 mph 8 mph 8 mph 8 mph 8 mph 7 mph 7 mph 7 mph 5 mph 5 mph 5 mph 4 mph 4 mph 4 mph 4 mph 4 mph 4 mph 5 mph 5 mph 5 mph 4 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 5 mi8 km .75 mi1 km .25 mi0 km .75 mi1 km 5 mi8 km
Hour (MDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
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Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KCOS model statistics.

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Prob Precip % = Probability of Precipitation.

Big Johnson Reservoir 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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