Observed 8:00 AM MDT at KMLS

Forsyth, MT weather

Sunny and 30°−1°.

Forecasts agree

Now 30°−1°

Sunny · Feels like 23°−5°

Feels like: 23°−5°; Wind chill from 7 mph11 km/h wind · air 30°−1°
Wind: 7 mph11 km/h; From the west. 58–8 mph13 km/h through 8 PM
Dew point: 27°−3°; Dry, static shocks likely
UV index: 0Low; Moderate 1–2 PM · peak 3
Pressure: 30.36 inHg1028 hPa; Rising · +0.06 inHg+2.0 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below freezing until 10 AM (low 30°−1°)
Above 40°4° today by 11 AM
High 50°10° today at 3 PM
Below 40°4° tonight after 8 PM
Hard freeze tonight 2–10 AM (low 28°−2°)

This morningUp to 41°5° by 11 AM · freezing, low 30°−1° · Clear
This afternoonUp to 50°10° by 3 PM · Clear
TonightDown to 29°−2° by 5 AM · freezing, low 29°−2° · Clear
Tomorrow morningUp to 44°7° by 11 AM · freezing, low 28°−2° · Clear
Tomorrow afternoonUp to 53°12° by 4 PM · Partly cloudy
Tomorrow nightDown to 34°1° by 5 AM · rain chance 20% · Cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 8a	Sunny	30°−1° (likely 30°−1° to 35°2°)	23°−5°	0%	8 mph13 km/h from W, gusts 9 mph15 km/h	87%	1%	0
Sat 9a	Sunny	32°0° (likely 32°0° to 37°3°)	25°−4°	0%	8 mph13 km/h from W, gusts 10 mph15 km/h	81%	0%	0
Sat 10a	Sunny	37°3° (likely 37°3° to 41°5°)	32°0°	0%	7 mph11 km/h from W, gusts 15 mph24 km/h	67%	0%	1
Sat 11a	Sunny	41°5° (likely 41°5° to 44°7°)	36°2°	0%	7 mph11 km/h from W, gusts 13 mph20 km/h	53%	0%	2
Sat 12p	Sunny	45°7° (likely 45°7° to 47°8°)	41°5°	0%	7 mph11 km/h from W, gusts 10 mph16 km/h	43%	0%	2
Sat 1p	Sunny	47°8° (likely 47°8° to 50°10°)	45°7°	0%	6 mph10 km/h from W, gusts 8 mph13 km/h	37%	0%	3
Sat 2p	Sunny	48°9° (likely 48°9° to 52°11°)	46°8°	0%	6 mph10 km/h from WSW, gusts 8 mph13 km/h	33%	0%	2
Sat 3p	Sunny	50°10° (likely 50°10° to 53°12°)	48°9°	0%	5 mph8 km/h from WSW, gusts 10 mph15 km/h	30%	0%	2
Sat 4p	Sunny	50°10° (likely 50°10° to 53°12°)	48°9°	0%	5 mph8 km/h from S, gusts 12 mph19 km/h	30%	0%	1
Sat 5p	Sunny	49°9° (likely 49°9° to 52°11°)	48°9°	0%	5 mph8 km/h from ESE, gusts 12 mph19 km/h	30%	0%	0
Sat 6p	Clear	47°8° (likely 46°8° to 48°9°)	45°7°	0%	5 mph8 km/h from E, gusts 10 mph16 km/h	36%	0%	0
Sat 7p	Clear	44°7° (likely 42°6° to 44°7°)	40°4°	0%	6 mph10 km/h from ESE, gusts 9 mph14 km/h	43%	0%	0
Sat 8p	Clear	39°4° (likely 39°4° to 42°6°)	35°2°	0%	6 mph10 km/h from ESE, gusts 9 mph14 km/h	47%	0%	0
Sat 9p	Clear	37°3° (likely 37°3° to 41°5°)	32°0°	0%	6 mph10 km/h from E, gusts 8 mph13 km/h	50%	0%	0
Sat 10p	Clear	36°2° (likely 36°2° to 40°4°)	32°0°	0%	5 mph8 km/h from E, gusts 8 mph12 km/h	51%	0%	0
Sat 11p	Clear	35°2° (likely 35°2° to 39°4°)	31°−1°	0%	5 mph8 km/h from E, gusts 9 mph14 km/h	52%	0%	0
Sun 12a	Clear	33°1° (likely 33°1° to 38°3°)	29°−2°	0%	5 mph8 km/h from E, gusts 9 mph14 km/h	56%	0%	0
Sun 1a	Clear	33°1° (likely 33°1° to 37°3°)	29°−2°	0%	5 mph8 km/h from E, gusts 9 mph14 km/h	56%	0%	0
Sun 2a	Clear	32°0° (likely 31°−1° to 37°3°)	27°−3°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	58%	0%	0
Sun 3a	Clear	31°−1° (likely 30°−1° to 36°2°)	26°−3°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	59%	0%	0
Sun 4a	Clear	30°−1° (likely 29°−2° to 35°2°)	25°−4°	0%	5 mph8 km/h from E, gusts 9 mph15 km/h	62%	0%	0
Sun 5a	Clear	29°−2° (likely 28°−2° to 34°1°)	23°−5°	0%	6 mph10 km/h from E, gusts 9 mph14 km/h	63%	0%	0
Sun 6a	Clear	29°−2° (likely 27°−3° to 34°1°)	23°−5°	0%	6 mph10 km/h from E, gusts 9 mph14 km/h	65%	0%	0
Sun 7a	Clear	28°−2° (likely 26°−3° to 34°1°)	22°−6°	0%	6 mph10 km/h from E, gusts 8 mph13 km/h	65%	0%	0
Sun 8a	Sunny	28°−2° (likely 26°−3° to 35°2°)	22°−6°	0%	6 mph10 km/h from E, gusts 9 mph15 km/h	67%	0%	0
Sun 9a	Sunny	32°0° (likely 29°−2° to 37°3°)	24°−4°	0%	9 mph14 km/h from E, gusts 12 mph19 km/h	61%	0%	0
Sun 10a	Sunny	38°3° (likely 36°2° to 42°6°)	32°0°	0%	9 mph14 km/h from E, gusts 14 mph23 km/h	53%	0%	1
Sun 11a	Sunny	44°7° (likely 41°5° to 46°8°)	39°4°	0%	9 mph14 km/h from E, gusts 17 mph27 km/h	44%	3%	2
Sun 12p	Sunny	48°9° (likely 46°8° to 50°10°)	43°6°	0%	13 mph21 km/h from E, gusts 17 mph28 km/h	38%	9%	3
Sun 1p	Sunny	51°11° (likely 49°9° to 53°12°)	51°11°	0%	13 mph21 km/h from E, gusts 19 mph30 km/h	35%	13%	4
Sun 2p	Sunny	52°11° (likely 51°11° to 56°13°)	52°11°	0%	13 mph21 km/h from E, gusts 21 mph33 km/h	34%	19%	4
Sun 3p	Sunny	52°11° (likely 52°11° to 57°14°)	52°11°	0%	13 mph21 km/h from E, gusts 22 mph35 km/h	32%	17%	3
Sun 4p	Cloudy	53°12° (likely 52°11° to 56°13°)	53°12°	0%	13 mph21 km/h from E, gusts 23 mph38 km/h	34%	68%	2
Sun 5p	Cloudy	51°11° (likely 51°11° to 53°12°)	51°11°	0%	13 mph21 km/h from E, gusts 23 mph37 km/h	35%	71%	1
Sun 6p	Partly cloudy	48°9° (likely 47°8° to 51°11°)	43°6°	10%	13 mph21 km/h from ESE, gusts 21 mph33 km/h	43%	59%	0
Sun 7p	Mostly cloudy	46°8° (likely 45°7° to 50°10°)	40°4°	10%	13 mph21 km/h from ESE, gusts 20 mph33 km/h	52%	68%	0
Sun 8p	Cloudy	42°6° (likely 41°5° to 49°9°)	35°2°	10%	13 mph21 km/h from ESE, gusts 21 mph34 km/h	59%	87%	0
Sun 9p	Cloudy	41°5° (likely 40°4° to 48°9°)	33°1°	10%	14 mph23 km/h from ESE, gusts 20 mph32 km/h	65%	89%	0
Sun 10p	Cloudy	40°4° (likely 40°4° to 46°8°)	32°0°	10%	14 mph23 km/h from ESE, gusts 20 mph33 km/h	69%	88%	0
Sun 11p	Cloudy	39°4° (likely 39°4° to 45°7°)	31°−1°	10%	14 mph23 km/h from ESE, gusts 21 mph33 km/h	73%	92%	0
Mon 12a	Cloudy	37°3° (likely 37°3° to 43°6°)	29°−2°	20%	13 mph21 km/h from ESE, gusts 21 mph35 km/h	81%	93%	0
Mon 1a	Cloudy	37°3° (likely 37°3° to 43°6°)	29°−2°	20%	13 mph21 km/h from ESE, gusts 21 mph34 km/h	83%	95%	0
Mon 2a	Showers	36°2° (likely 36°2° to 43°6°)	28°−2°	20%	13 mph21 km/h from ESE, gusts 21 mph34 km/h	85%	95%	0
Mon 3a	Drizzle	36°2° (likely 36°2° to 43°6°)	28°−2°	20%	12 mph19 km/h from E, gusts 21 mph34 km/h	88%	95%	0
Mon 4a	Showers	35°2° (likely 35°2° to 42°6°)	27°−3°	20%	12 mph19 km/h from E, gusts 20 mph33 km/h	90%	96%	0
Mon 5a	Cloudy	34°1° (likely 34°1° to 41°5°)	26°−3°	20%	12 mph19 km/h from E, gusts 21 mph33 km/h	93%	97%	0
Mon 6a	Cloudy	34°1° (likely 34°1° to 42°6°)	26°−3°	5%	12 mph19 km/h from E, gusts 21 mph34 km/h	94%	97%	0
Mon 7a	Cloudy	34°1° (likely 34°1° to 42°6°)	26°−3°	5%	12 mph19 km/h from E, gusts 22 mph35 km/h	95%	99%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Cloudy. High 50°10°, low 28°−2°. Typical 56°13° / 30°−1°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 29°−2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 50. Southwest wind 5 to 8 mph.
Tonight: Mostly clear, with a low around 28. East wind around 6 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
50°10°–53°12°
Low, likely
28°−2°–35°2°
Typical high / low
56°13° / 30°−1°
Wind
22 mph35 km/h, gusts 37 mph59 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 53°12°, low 34°1°. Typical 56°13° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 28°−2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Drizzle, 34°1°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 53, with temperatures falling to around 51 in the afternoon. East wind 6 to 13 mph.
Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 34. East southeast wind around 14 mph. Chance of precipitation is 20%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–57°14°
Low, likely
25°−4°–34°1°
Typical high / low
56°13° / 30°−1°
Wind
17 mph27 km/h, gusts 26 mph42 km/h
UV peak
4
Monday, Oct 26. Mostly cloudy. High 49°9°, low 30°−1°. Typical 55°13° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 47°8°
  Dry
3. Evening
  6 PM–midnight
  Clear, 40°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 49. East southeast wind around 14 mph.
Night: Partly cloudy, with a low around 30. East southeast wind 10 to 15 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
46°8°–49°9°
Low, likely
30°−1°–37°3°
Typical high / low
55°13° / 29°−2°
Wind
17 mph28 km/h, gusts 28 mph45 km/h
UV peak
2
Tuesday, Oct 27. Showers. High 50°10°, low 33°1°. Typical 55°13° / 29°−2°. Rain 0.23 in5.8 mm, 50% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  30% chance · 0.1 in0.3 cm
2. Afternoon
  noon–6 PM
  Snow, 41°5°
  40% chance · 0.3 in0.7 cm
3. Evening
  6 PM–midnight
  Cloudy, 40°5°
  30% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Mostly cloudy. High near 50, with temperatures falling to around 48 in the afternoon. East wind around 8 mph. Chance of precipitation is 50%.
Night: A chance of rain showers. Mostly cloudy, with a low around 33. Northwest wind around 8 mph. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–50°10°
Low, likely
31°−1°–36°2°
Typical high / low
55°13° / 29°−2°
Wind
15 mph23 km/h, gusts 23 mph37 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 53°12°, low 28°−2°. Typical 54°12° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 33°1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before noon. Mostly sunny. High near 53, with temperatures falling to around 49 in the afternoon. West northwest wind around 10 mph. Chance of precipitation is 20%.
Night: Partly cloudy, with a low around 28. Northeast wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–58°14°
Low, likely
28°−2°–38°3°
Typical high / low
54°12° / 29°−2°
Wind
13 mph21 km/h, gusts 32 mph51 km/h
UV peak
3
Thursday, Oct 29. Cloudy. High 50°10°, low 29°−2°. Typical 54°12° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 40°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny. High near 50, with temperatures falling to around 47 in the afternoon. Northeast wind 3 to 7 mph.
Night: Partly cloudy, with a low around 29. Northeast wind around 5 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
45°7°–57°14°
Low, likely
29°−2°–35°2°
Typical high / low
54°12° / 28°−2°
Wind
20 mph32 km/h, gusts 35 mph56 km/h
UV peak
3
Friday, Oct 30. Mostly cloudy. High 51°11°, low 30°−1°. Typical 53°12° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 40°4°
  20% chance · 0.1 in0.3 cm
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny. High near 51, with temperatures falling to around 48 in the afternoon. North northwest wind around 5 mph.
Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 30. North northwest wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
43°6°–56°13°
Low, likely
30°−1°–46°8°
Typical high / low
53°12° / 28°−2°
Wind
14 mph22 km/h, gusts 24 mph38 km/h
UV peak
3
Saturday, Oct 31. Drizzle. High 44°7°, low 37°3°. Typical 53°12° / 27°−3°. Rain 0.09 in2.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 40°4°
  20% chance · 0.2 in0.5 cm
2. Afternoon
  noon–6 PM
  Cloudy, 45°7°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 40°5°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 34°1°
  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.
High, likely
38°3°–52°11°
Low, likely
29°−2°–44°7°
Typical high / low
53°12° / 27°−3°
Wind
15 mph24 km/h, gusts 29 mph46 km/h
UV peak
2
Sunday, Nov 1. Cloudy. High 46°8°, low 32°0°. Typical 52°11° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 45°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 39°4°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  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.
High, likely
41°5°–49°9°
Low, likely
18°−8°–39°4°
Typical high / low
52°11° / 27°−3°
Wind
19 mph30 km/h, gusts 28 mph45 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 51°11°, low 36°2°. Typical 52°11° / 26°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 42°6°
  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.
High, likely
38°3°–63°17°
Low, likely
35°2°–39°4°
Typical high / low
52°11° / 26°−3°
Wind
10 mph17 km/h, gusts 17 mph28 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 50°, low 28°.
Tomorrow
Dry, high 53°, low 34°, warming up.
Monday
Dry, high 49°, low 30°, cooling off.
Rest of week
Highs 44–53°; chance of precipitation on Tuesday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (BYZ) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Yellowstone River at Forsyth

0.8 mi

Below flood stage

Level: 1.7 ft
Flow: 5,110 cfs

Reading from Sat 6:45 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 70% less heating than a typical week.

This week 49Typical 162

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 36
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 9 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 27°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Forsyth · official normals 1991–2020 · records 1975–2026

Oct 24, today vs a typical year

Today’s expected high is 6°3° colder than typical.

Last 7 days vs normal

On average 8°4° warmer than normal (daily mean temperature).

+3°+2°SunOct 18
+7°+4°MonOct 19
+6°+3°TueOct 20
+11°+6°WedOct 21
+12°+7°ThuOct 22
—FriOct 23
—SatOct 24

Forsyth weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 28 min; Losing 3 min 7 s a day; shortest Dec 21, 1 h 51 min less
Golden hour: 5:22–6:23 PM; Morning 7:17–8:18 AM
Blue hour: 6:23–6:35 PM; Morning 7:05–7:17 AM; first light 7:05 AM

Stars tonight? Fair

Clear 6:35 PM–7:07 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:50 AM · rises 5:04 PM
Full moon: Oct 25
New moon: Nov 9

Looking south from Forsyth. The highest point on the skyline is about 3,100 ft, 6 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.