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Halloween forecast: See where trick-or-treaters will need an umbrella. Chevron right

Sidney, MT

40°F
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Sidney

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Sidney, MT Weather
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2 AM

38°
RealFeel® 22°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 25%
Chevron down
Cloudy

WindWNW 24 mph

Air QualityExcellent

Wind Gusts36 mph

Humidity77%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling1700 ft

3 AM

38°
RealFeel® 22°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindWNW 22 mph

Air QualityExcellent

Wind Gusts35 mph

Humidity79%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling2000 ft

4 AM

38°
RealFeel® 23°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindWNW 22 mph

Air QualityExcellent

Wind Gusts32 mph

Humidity77%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling2500 ft

5 AM

38°
RealFeel® 23°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindWNW 21 mph

Air QualityExcellent

Wind Gusts29 mph

Humidity75%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling3100 ft

6 AM

37°
RealFeel® 22°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindWNW 20 mph

Air QualityExcellent

Wind Gusts28 mph

Humidity72%

Indoor Humidity37% (Dry)

Dew Point29° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling3700 ft

7 AM

35°
RealFeel® 21°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 13%
Chevron down
Cloudy

WindWNW 18 mph

Air QualityExcellent

Wind Gusts27 mph

Humidity72%

Indoor Humidity36% (Dry)

Dew Point27° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling12400 ft

8 AM

34°
RealFeel® 19°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Mostly cloudy

RealFeel Shade™19°

WindWNW 18 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts27 mph

Humidity72%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

37°
RealFeel® 24°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™24°

WindWNW 18 mph

Air QualityExcellent

Max UV Index0.7 (Low)

Wind Gusts27 mph

Humidity64%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover72%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

39°
RealFeel® 28°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™26°

WindWNW 18 mph

Air QualityExcellent

Max UV Index1.4 (Low)

Wind Gusts28 mph

Humidity59%

Indoor Humidity35% (Dry)

Dew Point26° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

42°
RealFeel® 32°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™29°

WindWNW 18 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts28 mph

Humidity52%

Indoor Humidity35% (Dry)

Dew Point25° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover58%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

45°
RealFeel® 36°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Intermittent clouds

RealFeel Shade™33°

WindWNW 18 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts28 mph

Humidity46%

Indoor Humidity34% (Dry)

Dew Point25° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover50%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

47°
RealFeel® 40°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™37°

WindWNW 18 mph

Air QualityFair

Max UV Index2.5 (Moderate)

Wind Gusts28 mph

Humidity40%

Indoor Humidity34% (Dry)

Dew Point24° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover43%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

50°
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™40°

WindWNW 16 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts28 mph

Humidity35%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover36%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

51°
RealFeel® 45°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™42°

WindWNW 15 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts25 mph

Humidity33%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover29%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

51°
RealFeel® 46°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™44°

WindWNW 13 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts21 mph

Humidity31%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover21%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

49°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™44°

WindWNW 10 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts16 mph

Humidity35%

Indoor Humidity32% (Dry)

Dew Point22° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover14%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

45°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindW 7 mph

Air QualityExcellent

Wind Gusts12 mph

Humidity42%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover7%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

40°
RealFeel® 37°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindW 6 mph

Air QualityExcellent

Wind Gusts9 mph

Humidity52%

Indoor Humidity33% (Dry)

Dew Point24° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

37°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindW 6 mph

Air QualityExcellent

Wind Gusts6 mph

Humidity57%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

34°
RealFeel® 33°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindW 5 mph

Air QualityExcellent

Wind Gusts6 mph

Humidity63%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

32°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindW 5 mph

Air QualityExcellent

Wind Gusts6 mph

Humidity69%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

31°
RealFeel® 30°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindW 5 mph

Air QualityExcellent

Wind Gusts5 mph

Humidity72%

Indoor Humidity33% (Dry)

Dew Point23° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover5%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Sidney

AccuWeather's hourly forecast for Sidney provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 38° with a RealFeel® of 22°, cloudy with a 25% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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