Big Spring Creek (MT) near Lewistown at R&B Trading Post
13 mi- Level
- 3.8 ft
Reading from Sat 11:30 AM · NWS gauge page
Appearance
Model estimate for 12:00 PM MDT (no recent station report)
Sunny and 38°3°, 10°6° colder than a typical Oct 24.
Today: low 24°−4° (likely 21°−6° to 25°−4°), high 42°6° (likely 42°6° to 47°8°).
Now 38°3°
Sunny · Feels like 34°1°
Light snow now, through the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 12p | Sunny | 38°3° (likely 38°3° to 42°6°) | 34°1° | 0% | 5 mph8 km/h from SSW, gusts 12 mph20 km/h | 52% | 0% | 2 |
| Sat 1p | Sunny | 41°5° (likely 40°4° to 45°7°) | 39°4° | 0% | 3 mph5 km/h from SSW, gusts 14 mph23 km/h | 52% | 0% | 3 |
| Sat 2p | Sunny | 42°6° (likely 41°5° to 46°8°) | 40°4° | 0% | 3 mph5 km/h from SSW, gusts 13 mph21 km/h | 48% | 0% | 3 |
| Sat 3p | Sunny | 42°6° (likely 42°6° to 47°8°) | 40°4° | 0% | 3 mph5 km/h from SSW, gusts 11 mph18 km/h | 48% | 0% | 2 |
| Sat 4p | Sunny | 42°6° (likely 42°6° to 47°8°) | 42°6° | 0% | 2 mph3 km/h from S, gusts 9 mph14 km/h | 48% | 0% | 1 |
| Sat 5p | Sunny | 42°6° (likely 41°5° to 46°8°) | 42°6° | 0% | 2 mph3 km/h from SE, gusts 6 mph9 km/h | 49% | 0% | 0 |
| Sat 6p | Clear | 38°3° (likely 38°3° to 41°5°) | 36°2° | 0% | 3 mph5 km/h from ESE, gusts 4 mph7 km/h | 60% | 0% | 0 |
| Sat 7p | Clear | 36°2° (likely 36°2° to 38°3°) | 33°1° | 0% | 3 mph5 km/h from ESE, gusts 6 mph9 km/h | 64% | 0% | 0 |
| Sat 8p | Clear | 34°1° (likely 34°1° to 37°3°) | 31°−1° | 0% | 3 mph5 km/h from SE, gusts 4 mph6 km/h | 62% | 0% | 0 |
| Sat 9p | Clear | 33°1° (likely 33°1° to 37°3°) | 30°−1° | 0% | 3 mph5 km/h from S, gusts 4 mph6 km/h | 62% | 0% | 0 |
| Sat 10p | Clear | 32°0° (likely 32°0° to 37°3°) | 32°0° | 0% | 2 mph3 km/h from S, gusts 4 mph6 km/h | 59% | 4% | 0 |
| Sat 11p | Clear | 33°1° (likely 33°1° to 37°3°) | 33°1° | 0% | 2 mph3 km/h from S, gusts 3 mph4 km/h | 55% | 10% | 0 |
| Sun 12a | Clear | 32°0° (likely 32°0° to 38°3°) | 29°−2° | 0% | 3 mph5 km/h from S, gusts 2 mph4 km/h | 55% | 5% | 0 |
| Sun 1a | Clear | 31°−1° (likely 31°−1° to 37°3°) | 28°−2° | 0% | 3 mph5 km/h from ESE, gusts 3 mph5 km/h | 60% | 3% | 0 |
| Sun 2a | Clear | 30°−1° (likely 30°−1° to 35°2°) | 26°−3° | 0% | 3 mph5 km/h from ENE, gusts 7 mph11 km/h | 61% | 2% | 0 |
| Sun 3a | Clear | 29°−2° (likely 29°−2° to 34°1°) | 25°−4° | 0% | 3 mph5 km/h from ENE, gusts 8 mph13 km/h | 64% | 0% | 0 |
| Sun 4a | Clear | 28°−2° (likely 26°−3° to 32°0°) | 23°−5° | 0% | 5 mph8 km/h from ENE, gusts 9 mph14 km/h | 68% | 0% | 0 |
| Sun 5a | Clear | 26°−3° (likely 24°−4° to 32°0°) | 20°−7° | 0% | 5 mph8 km/h from NE, gusts 9 mph14 km/h | 68% | 1% | 0 |
| Sun 6a | Clear | 26°−3° (likely 23°−5° to 31°−1°) | 20°−7° | 0% | 5 mph8 km/h from ENE, gusts 7 mph12 km/h | 70% | 2% | 0 |
| Sun 7a | Clear | 25°−4° (likely 22°−6° to 31°−1°) | 19°−7° | 0% | 5 mph8 km/h from ENE, gusts 8 mph12 km/h | 70% | 2% | 0 |
| Sun 8a | Sunny | 24°−4° (likely 22°−6° to 31°−1°) | 18°−8° | 0% | 5 mph8 km/h from NE, gusts 12 mph19 km/h | 70% | 1% | 0 |
| Sun 9a | Sunny | 26°−3° (likely 24°−4° to 32°0°) | 19°−7° | 0% | 6 mph10 km/h from NE, gusts 13 mph21 km/h | 69% | 2% | 0 |
| Sun 10a | Sunny | 31°−1° (likely 30°−1° to 35°2°) | 25°−4° | 0% | 6 mph10 km/h from NE, gusts 12 mph20 km/h | 64% | 2% | 1 |
| Sun 11a | Sunny | 34°1° (likely 34°1° to 38°3°) | 28°−2° | 0% | 7 mph11 km/h from ENE, gusts 12 mph20 km/h | 60% | 1% | 2 |
| Sun 12p | Sunny | 36°2° (likely 36°2° to 40°4°) | 30°−1° | 0% | 8 mph13 km/h from ENE, gusts 14 mph22 km/h | 58% | 0% | 3 |
| Sun 1p | Sunny | 37°3° (likely 37°3° to 42°6°) | 30°−1° | 0% | 9 mph14 km/h from ENE, gusts 14 mph22 km/h | 59% | 0% | 4 |
| Sun 2p | Sunny | 39°4° (likely 39°4° to 43°6°) | 33°1° | 0% | 9 mph14 km/h from E, gusts 15 mph24 km/h | 55% | 0% | 4 |
| Sun 3p | Sunny | 40°4° (likely 40°4° to 43°6°) | 33°1° | 0% | 10 mph16 km/h from E, gusts 16 mph26 km/h | 55% | 0% | 3 |
| Sun 4p | Sunny | 40°4° (likely 40°4° to 43°6°) | 33°1° | 0% | 10 mph16 km/h from E, gusts 17 mph27 km/h | 55% | 0% | 2 |
| Sun 5p | Sunny | 39°4° (likely 38°3° to 41°5°) | 32°0° | 0% | 10 mph16 km/h from E, gusts 18 mph30 km/h | 57% | 0% | 1 |
| Sun 6p | Clear | 35°2° (likely 35°2° to 38°3°) | 27°−3° | 0% | 10 mph16 km/h from E, gusts 16 mph26 km/h | 65% | 0% | 0 |
| Sun 7p | Clear | 34°1° (likely 32°0° to 37°3°) | 26°−3° | 0% | 10 mph16 km/h from E, gusts 14 mph22 km/h | 68% | 2% | 0 |
| Sun 8p | Clear | 32°0° (likely 31°−1° to 36°2°) | 24°−4° | 0% | 10 mph16 km/h from E, gusts 14 mph22 km/h | 65% | 3% | 0 |
| Sun 9p | Clear | 32°0° (likely 30°−1° to 36°2°) | 23°−5° | 0% | 12 mph19 km/h from ESE, gusts 13 mph22 km/h | 65% | 6% | 0 |
| Sun 10p | Clear | 32°0° (likely 30°−1° to 36°2°) | 23°−5° | 0% | 12 mph19 km/h from ESE, gusts 13 mph21 km/h | 66% | 11% | 0 |
| Sun 11p | Partly cloudy | 32°0° (likely 30°−1° to 36°2°) | 23°−5° | 0% | 12 mph19 km/h from ESE, gusts 10 mph16 km/h | 63% | 29% | 0 |
| Mon 12a | Clear | 32°0° (likely 30°−1° to 35°2°) | 23°−5° | 0% | 12 mph19 km/h from ESE, gusts 9 mph14 km/h | 62% | 38% | 0 |
| Mon 1a | Clear | 32°0° (likely 29°−2° to 35°2°) | 23°−5° | 0% | 12 mph19 km/h from ESE, gusts 9 mph14 km/h | 68% | 40% | 0 |
| Mon 2a | Clear | 31°−1° (likely 29°−2° to 35°2°) | 22°−6° | 0% | 12 mph19 km/h from ESE, gusts 9 mph14 km/h | 70% | 41% | 0 |
| Mon 3a | Clear | 30°−1° (likely 29°−2° to 35°2°) | 20°−7° | 0% | 12 mph19 km/h from ESE, gusts 9 mph14 km/h | 74% | 41% | 0 |
| Mon 4a | Partly cloudy | 29°−2° (likely 29°−2° to 34°1°) | 19°−7° | 0% | 12 mph19 km/h from ESE, gusts 9 mph14 km/h | 78% | 44% | 0 |
| Mon 5a | Cloudy | 30°−1° (likely 29°−2° to 33°1°) | 20°−7° | 0% | 12 mph19 km/h from ESE, gusts 8 mph14 km/h | 75% | 49% | 0 |
| Mon 6a | Partly cloudy | 28°−2° (likely 28°−2° to 33°1°) | 17°−8° | 0% | 13 mph21 km/h from SE, gusts 8 mph13 km/h | 77% | 43% | 0 |
| Mon 7a | Clear | 30°−1° (likely 30°−1° to 34°1°) | 20°−7° | 0% | 13 mph21 km/h from SE, gusts 10 mph17 km/h | 78% | 9% | 0 |
| Mon 8a | Sunny | 30°−1° (likely 30°−1° to 34°1°) | 20°−7° | 0% | 13 mph21 km/h from SE, gusts 10 mph16 km/h | 79% | 9% | 0 |
| Mon 9a | Sunny | 31°−1° (likely 31°−1° to 35°2°) | 21°−6° | 0% | 13 mph21 km/h from SE, gusts 11 mph18 km/h | 78% | 13% | 0 |
| Mon 10a | Partly sunny | 34°1° (likely 34°1° to 38°3°) | 25°−4° | 0% | 13 mph21 km/h from SE, gusts 15 mph24 km/h | 75% | 22% | 1 |
| Mon 11a | Partly sunny | 38°3° (likely 38°3° to 42°6°) | 30°−1° | 0% | 13 mph21 km/h from SE, gusts 15 mph24 km/h | 72% | 28% | 2 |
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny, with a high near 42. South wind around 5 mph.
Tonight: Mostly clear, with a low around 24. East southeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Sunny, with a high near 40. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Night: Mostly clear, with a low around 26. East southeast wind around 12 mph, with gusts as high as 20 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
30% chance
Official NWS forecast
Day: Mostly sunny, with a high near 46. Southeast wind 9 to 13 mph, with gusts as high as 21 mph.
Night: A slight chance of rain after midnight. Partly cloudy, with a low around 30. Southeast wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
40% chance · 0.1 in0.3 cm
Afternoon
noon–6 PM
40% chance · 0.03 in0.8 mm
Evening
6 PM–midnight
30% chance · 0.08 in2 mm
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly cloudy, with a high near 44. Southwest wind 6 to 17 mph, with gusts as high as 26 mph.
Night: Mostly cloudy, with a low around 30. West wind 15 to 20 mph, with gusts as high as 30 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 46.
Night: Partly cloudy, with a low around 28.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
30% chance · 0.2 in0.5 cm
Overnight
midnight–6 AM
30% chance · 0.2 in0.5 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 42.
Night: A chance of snow. Mostly cloudy, with a low around 27.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
30% chance · 0.01 in0.3 mm
Afternoon
noon–6 PM
30% chance · 0.01 in0.4 mm
Evening
6 PM–midnight
20% chance · 0.03 in0.7 mm
Overnight
midnight–6 AM
20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of snow before noon. Partly sunny, with a high near 42.
Night: A slight chance of snow. Mostly cloudy, with a low around 27.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
20% chance · 0.2 in0.5 cm
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Dry, high 42°, low 24°.
Dry, high 40°, low 26°.
Dry, high 46°, low 30°, warming up.
Highs 37–49°; chance of precipitation on Tuesday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (TFX) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Reading from Sat 11:30 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 66% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at.
Dry air outside (dew point 22°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 10°6° colder than typical.
Hilger weather by month: normals, records, snow and freeze dates
Sunrise 7:49 AM, sunset 6:13 PM.
Clear 6:44 PM–7:19 AM, but the moon is 99% lit and up.
Waxing gibbous
97% lit · growing