Big Spring Creek (MT) near Lewistown at R&B Trading Post
8.9 mi- Level
- 3.8 ft
Reading from Sun 10:30 AM · NWS gauge page
Appearance
Model estimate for 11:00 AM MDT (no recent station report)
Sunny and 34°1°, 9°5° colder than a typical Oct 25, freeze watch tonight, low 25°−4°.
Today: low 22°−6° (likely 21°−6° to 25°−4°), high 43°6° (likely 43°6° to 45°7°).
Now 34°1°
Sunny
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sun 11a | Sunny | 34°1° (likely 29°−2° to 34°1°) | 34°1° | 0% | 1 mph2 km/h from ENE, gusts 3 mph4 km/h | 73% | 21% | 2 |
| Sun 12p | Sunny | 36°2° (likely 32°0° to 37°3°) | 36°2° | 0% | 2 mph3 km/h from E, gusts 3 mph5 km/h | 74% | 19% | 3 |
| Sun 1p | Sunny | 37°3° (likely 36°2° to 40°4°) | 34°1° | 0% | 3 mph5 km/h from E, gusts 6 mph10 km/h | 70% | 18% | 4 |
| Sun 2p | Sunny | 39°4° (likely 39°4° to 42°6°) | 36°2° | 0% | 5 mph8 km/h from E, gusts 7 mph12 km/h | 65% | 1% | 4 |
| Sun 3p | Sunny | 41°5° (likely 41°5° to 44°7°) | 36°2° | 0% | 7 mph11 km/h from E, gusts 9 mph15 km/h | 64% | 0% | 3 |
| Sun 4p | Sunny | 38°3° (likely 38°3° to 45°7°) | 33°1° | 0% | 7 mph11 km/h from ESE, gusts 13 mph22 km/h | 64% | 1% | 2 |
| Sun 5p | Sunny | 38°3° (likely 38°3° to 43°6°) | 32°0° | 0% | 9 mph14 km/h from ESE, gusts 17 mph28 km/h | 67% | 2% | 1 |
| Sun 6p | Clear | 39°4° (likely 37°3° to 40°4°) | 33°1° | 0% | 9 mph14 km/h from E, gusts 17 mph27 km/h | 59% | 3% | 0 |
| Sun 7p | Clear | 34°1° (likely 34°1° to 37°3°) | 26°−3° | 0% | 10 mph16 km/h from ESE, gusts 15 mph23 km/h | 70% | 2% | 0 |
| Sun 8p | Clear | 32°0° (likely 32°0° to 36°2°) | 24°−4° | 0% | 9 mph14 km/h from ESE, gusts 13 mph20 km/h | 68% | 1% | 0 |
| Sun 9p | Clear | 30°−1° (likely 30°−1° to 36°2°) | 22°−6° | 0% | 9 mph14 km/h from ESE, gusts 10 mph16 km/h | 70% | 2% | 0 |
| Sun 10p | Mostly clear | 29°−2° (likely 29°−2° to 34°1°) | 20°−7° | 0% | 9 mph14 km/h from ESE, gusts 12 mph20 km/h | 72% | 12% | 0 |
| Sun 11p | Clear | 30°−1° (likely 30°−1° to 34°1°) | 22°−6° | 0% | 9 mph14 km/h from ESE, gusts 15 mph24 km/h | 70% | 7% | 0 |
| Mon 12a | Clear | 30°−1° (likely 30°−1° to 35°2°) | 22°−6° | 0% | 8 mph13 km/h from ESE, gusts 16 mph26 km/h | 69% | 11% | 0 |
| Mon 1a | Clear | 29°−2° (likely 29°−2° to 35°2°) | 21°−6° | 0% | 8 mph13 km/h from ESE, gusts 15 mph24 km/h | 74% | 12% | 0 |
| Mon 2a | Clear | 28°−2° (likely 28°−2° to 35°2°) | 20°−7° | 0% | 8 mph13 km/h from ESE, gusts 14 mph22 km/h | 78% | 10% | 0 |
| Mon 3a | Clear | 27°−3° (likely 27°−3° to 34°1°) | 20°−7° | 0% | 7 mph11 km/h from SE, gusts 12 mph19 km/h | 80% | 12% | 0 |
| Mon 4a | Mostly clear | 25°−4° (likely 25°−4° to 33°1°) | 17°−8° | 0% | 7 mph11 km/h from SE, gusts 12 mph19 km/h | 84% | 22% | 0 |
| Mon 5a | Mostly clear | 25°−4° (likely 25°−4° to 32°0°) | 18°−8° | 0% | 6 mph10 km/h from SE, gusts 11 mph18 km/h | 89% | 14% | 0 |
| Mon 6a | Clear | 25°−4° (likely 25°−4° to 31°−1°) | 18°−8° | 0% | 6 mph10 km/h from SE, gusts 12 mph19 km/h | 91% | 6% | 0 |
| Mon 7a | Clear | 24°−4° (likely 24°−4° to 33°1°) | 17°−8° | 0% | 6 mph10 km/h from SE, gusts 12 mph19 km/h | 89% | 3% | 0 |
| Mon 8a | Sunny | 25°−4° (likely 25°−4° to 33°1°) | 19°−7° | 0% | 5 mph8 km/h from SSE, gusts 10 mph17 km/h | 91% | 3% | 0 |
| Mon 9a | Sunny | 28°−2° (likely 28°−2° to 34°1°) | 22°−6° | 0% | 6 mph10 km/h from SSE, gusts 9 mph15 km/h | 88% | 5% | 0 |
| Mon 10a | Mostly sunny | 35°2° (likely 34°1° to 39°4°) | 31°−1° | 0% | 5 mph8 km/h from SSE, gusts 12 mph19 km/h | 76% | 9% | 1 |
| Mon 11a | Sunny | 39°4° (likely 39°4° to 44°7°) | 36°2° | 0% | 5 mph8 km/h from SSE, gusts 11 mph17 km/h | 69% | 24% | 2 |
| Mon 12p | Sunny | 44°7° (likely 43°6° to 47°8°) | 41°5° | 0% | 5 mph8 km/h from SSE, gusts 8 mph13 km/h | 62% | 41% | 3 |
| Mon 1p | Sunny | 46°8° (likely 45°7° to 49°9°) | 43°6° | 0% | 6 mph10 km/h from SSE, gusts 8 mph13 km/h | 59% | 40% | 4 |
| Mon 2p | Sunny | 49°9° (likely 48°9° to 52°11°) | 46°8° | 0% | 7 mph11 km/h from SSE, gusts 8 mph13 km/h | 55% | 40% | 4 |
| Mon 3p | Sunny | 50°10° (likely 49°9° to 54°12°) | 47°8° | 0% | 7 mph11 km/h from S, gusts 7 mph12 km/h | 53% | 40% | 3 |
| Mon 4p | Mostly sunny | 49°9° (likely 49°9° to 54°12°) | 46°8° | 0% | 8 mph13 km/h from S, gusts 8 mph12 km/h | 53% | 54% | 2 |
| Mon 5p | Mostly sunny | 49°9° (likely 47°8° to 52°11°) | 46°8° | 0% | 8 mph13 km/h from S, gusts 7 mph11 km/h | 55% | 69% | 1 |
| Mon 6p | Partly cloudy | 44°7° (likely 44°7° to 47°8°) | 39°4° | 0% | 9 mph14 km/h from SSE, gusts 8 mph12 km/h | 65% | 72% | 0 |
| Mon 7p | Partly cloudy | 38°3° (likely 38°3° to 44°7°) | 32°0° | 0% | 9 mph14 km/h from SSE, gusts 8 mph13 km/h | 74% | 47% | 0 |
| Mon 8p | Partly cloudy | 36°2° (likely 36°2° to 42°6°) | 29°−2° | 0% | 9 mph14 km/h from SSE, gusts 9 mph15 km/h | 77% | 28% | 0 |
| Mon 9p | Clear | 38°3° (likely 38°3° to 42°6°) | 31°−1° | 0% | 10 mph16 km/h from SE, gusts 13 mph21 km/h | 77% | 43% | 0 |
| Mon 10p | Mostly cloudy | 37°3° (likely 37°3° to 43°6°) | 30°−1° | 0% | 10 mph16 km/h from SE, gusts 12 mph20 km/h | 80% | 53% | 0 |
| Mon 11p | Cloudy | 38°3° (likely 35°2° to 43°6°) | 31°−1° | 0% | 10 mph16 km/h from SE, gusts 11 mph17 km/h | 78% | 69% | 0 |
| Tue 12a | Cloudy | 37°3° (likely 35°2° to 42°6°) | 32°0° | 0%, 0.01 in0.3 mm | 6 mph10 km/h from SE, gusts 10 mph16 km/h | 79% | 89% | 0 |
| Tue 1a | Rain | 37°3° (likely 35°2° to 41°5°) | 32°0° | 20%, 0.01 in0.3 mm | 6 mph10 km/h from SE, gusts 7 mph11 km/h | 82% | 76% | 0 |
| Tue 2a | Rain | 36°2° (likely 35°2° to 43°6°) | 31°−1° | 20%, 0.01 in0.3 mm | 6 mph10 km/h from SE, gusts 6 mph10 km/h | 86% | 78% | 0 |
| Tue 3a | Rain | 35°2° (likely 34°1° to 41°5°) | 32°0° | 30%, 0.01 in0.3 mm | 3 mph5 km/h from S, gusts 9 mph15 km/h | 87% | 88% | 0 |
| Tue 4a | Rain | 34°1° (likely 34°1° to 41°5°) | 31°−1° | 40%, 0.01 in0.3 mm | 3 mph5 km/h from S, gusts 5 mph7 km/h | 89% | 94% | 0 |
| Tue 5a | Rain | 34°1° (likely 34°1° to 41°5°) | 31°−1° | 60%, 0.01 in0.3 mm | 3 mph5 km/h from S, gusts 4 mph7 km/h | 90% | 90% | 0 |
| Tue 6a | Rain | 31°−1° (likely 31°−1° to 41°5°) | 28°−2° | 60%, 0.17 in4.3 mm | 3 mph5 km/h from SSW, gusts 6 mph9 km/h | 90% | 87% | 0 |
| Tue 7a | Rain | 34°1° (likely 30°−1° to 44°7°) | 31°−1° | 60%, 0.17 in4.3 mm | 3 mph5 km/h from SSW, gusts 5 mph7 km/h | 89% | 97% | 0 |
| Tue 8a | Rain | 35°2° (likely 31°−1° to 42°6°) | 32°0° | 60%, 0.17 in4.3 mm | 3 mph5 km/h from SSW, gusts 6 mph10 km/h | 88% | 95% | 0 |
| Tue 9a | Rain | 35°2° (likely 33°1° to 40°4°) | 31°−1° | 60%, 0.17 in4.3 mm | 5 mph8 km/h from W, gusts 11 mph17 km/h | 87% | 92% | 0 |
| Tue 10a | Rain | 37°3° (likely 37°3° to 43°6°) | 33°1° | 60%, 0.17 in4.3 mm | 5 mph8 km/h from W, gusts 15 mph24 km/h | 84% | 87% | 0 |
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny. High near 43, with temperatures falling to around 38 in the afternoon. East wind 1 to 9 mph.
Tonight: Mostly clear. Low around 22, with temperatures rising to around 25 overnight. East southeast wind 6 to 10 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
60% chance · 0.06 in1.5 mm
Official NWS forecast
Day: Sunny. High near 52, with temperatures falling to around 49 in the afternoon. South southeast wind 5 to 8 mph.
Night: Rain likely after 1am. Mostly cloudy, with a low around 29. South southeast wind 3 to 10 mph. Chance of precipitation is 60%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
60% chance · 0.86 in22 mm
Afternoon
noon–6 PM
50% chance
Evening
6 PM–midnight
30% chance
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Rain likely. Mostly cloudy, with a high near 48. West southwest wind 3 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
Night: Partly cloudy, with a low around 28. West southwest wind 10 to 17 mph, with gusts as high as 28 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
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 52. West southwest wind around 8 mph.
Night: Partly cloudy, with a low around 24. East southeast wind around 6 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
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 44.
Night: A slight chance of rain and snow. Mostly cloudy, with a low around 22.
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
20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 42.
Night: A chance of rain and snow. Mostly cloudy, with a low around 22.
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: Partly sunny, with a high near 48.
Night: A slight chance of rain and snow before midnight. Partly cloudy, with a low around 25.
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
30% chance · 0.08 in2 mm
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
30% chance · 0.2 in5 mm
Afternoon
noon–6 PM
30% chance · 0.15 in3.7 mm
Evening
6 PM–midnight
20% chance · 0.08 in2.1 mm
Overnight
midnight–6 AM
20% chance · 0.06 in1.5 mm
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 43°, low 22°.
Dry, high 52°, low 29°, warming up.
64% chance of rain, high 48°, low 28°, cooling off.
Mostly dry, highs 42–52°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (TFX) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Reading from Sun 10:30 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
Tonight’s low: 25°−4°
Overnight low near 25°F — not yet at drip-the-faucets cold, but worth watching if it's forecast to drop further.
About 69% 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. About 12 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 26°F).
No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.
Today’s expected high is 9°5° colder than typical.
Spring Creek Colony weather by month: normals, records, snow and freeze dates
Sunrise 7:51 AM, sunset 6:12 PM.
Clear 6:44 PM–7:21 AM, but the moon is 100% lit and up.
Full moon
100% lit · growing