USGS · 06200000

BOULDER RIVER

USGS · 06200000LIVE

Boulder River at Big Timber MT

SWEET GRASS COUNTY, MT45.8338°N, -109.9387°W Updated 34 min ago

FLOW RATE

1,200cfs

GAUGE HT

3.17ft

AIR TEMP

77°F

WIND

12mph ESE

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

1,200cfs 45.1% vs avg

Optimal band: 1,063–1,438 cfs

PERIOD HIGH

1,360cfs

PERIOD LOW

1,150cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

3.17ft

Precipitation History

Your History · Boulder River at Big Timber MT

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Weather Conditions

WEATHER CONDITIONS

TODAY

77°

48°

THU

77°

54°

FRI

84°

55°

SAT

74°

50°

SUN

72°

46°

MON

63°

43°

TUE

88°

45°

TIME

WED

NOW

THU

FRI

SAT

SUN

MON

TEMP

hourly forecast

62°

mild

62°

60°

58°

57°

56°

55°

54°

58°

62°

65°

67°

72°

75°

77°

64°

63°

62°

61°

60°

59°

58°

57°

56°

57°

56°

55°

56°

58°

60°

62°

65°

70°

74°

80°

81°

72°

79°

84°

80°

78°

73°

72°

68°

64°

63°

61°

56°

52°

51°

50°

52°

57°

61°

66°

68°

70°

71°

67°

72°

73°

74°

72°

71°

69°

59°

53°

51°

50°

49°

50°

48°

46°

54°

57°

61°

64°

67°

69°

71°

72°

68°

70°

69°

67°

66°

56°

48°

46°

44°

43°

47°

53°

57°

59°

58°

59°

WIND

mph · gust · dir

5mph ENE

G 13 mph

G13

ENE

G10

NNE

G10

G11

NNE

G11

NNE

G12

NNE

G13

NNE

G11

G10

G11

ESE

G11

G17

G18

G20

G17

G16

G11

ENE

NNW

G14

NNE

G14

NNE

WSW

NNE

ENE

NNE

ENE

G17

G16

WSW

G20

G29

G31

WSW

G27

WSW

G20

G23

WNW

G14

G13

ENE

WSW

G15

G13

SSW

WSW

G13

WSW

G19

WNW

G19

G24

SSW

G21

WSW

G13

NNW

G12

G16

G18

G23

WSW

G23

WSW

G21

WSW

G22

WSW

G18

WSW

G16

WSW

G19

G20

WSW

SSW

G11

SSW

G11

G12

G15

WSW

G19

WSW

G23

G25

G26

G28

G29

G30

PRECIP

chance %

10%

11%

17%

11%

22%

24%

13%

10%

73%

61%

19%

42%

81%

75%

44%

29%

24%

20%

25%

24%

CLOUDS

cover %

100%

overcast

100%

94%

31%

100%

21%

22%

99%

100%

81%

100%

73%

100%

10%

100%

40%

100%

97%

11%

90%

100%

74%

100%

21%

83%

100%

87%

90%

21%

37%

58%

83%

100%

PRESSURE

hPa · trend

877

TemperatureWind / GustsPrecipitationCloud coverPressure

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FISH INDEX

Temperature

Warm

Wind

Moderate

Pressure

Falling — Active

Moon Phase

Average

DAYLIGHT

SUNRISE

05:30 AM

SUNSET

09:14 PM

15H 44M OF DAYLIGHT0H 0M REMAINING

MOON PHASE

Waxing Gibbous

73% illuminated

Station Location

45.8338, -109.9387

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DATA · USGS · NOAA · NWSUPDATED 2026-06-24 22:34 UTC

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