Observed 3:00 PM MDT at KHLN

Rimini, MT weather

Sunny and 43°6°, 15°8° colder than a typical Oct 24, freeze watch tonight, low 25°−4°.

Forecasts differ

Now 43°6°

Sunny

Wind: Calm; Light through 3 AM
Dew point: 30°−1°; Dry · down to 22°−6° by 1 AM
UV index: 3Moderate; Moderate until 5 PM · peak 4
Air quality: 52Moderate; Main pollutant: PM2.5 (fine particles)

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Hard freeze tonight 8 PM–tomorrow 2 PM (low 25°−4°)
Low 25°−4° tomorrow at 8 AM
Hard freeze tomorrow night 6 PM–11 AM (low 25°−4°)

This afternoonNear 38°3° · Clear
TonightDown to 27°−3° by 4 AM · freezing, low 27°−3° · Clear
Tomorrow morningUp to 30°−1° by 11 AM · freezing, low 25°−4° · Partly cloudy
Tomorrow afternoonNear 32°0° · freezing, low 31°−1° · Cloudy
Tomorrow nightDown to 26°−3° by 3 AM · freezing, low 26°−3° · Cloudy
Monday morningUp to 36°2° by 11 AM · freezing, low 25°−4° · Mostly cloudy
Monday afternoonUp to 44°7° by 2 PM · Mostly 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 3p	Sunny	38°3° (likely 33°1° to 44°7°)	36°2°	0%	3 mph5 km/h from NNE, gusts 6 mph10 km/h	72%	10%	3
Sat 4p	Sunny	38°3° (likely 35°2° to 44°7°)	36°2°	0%	3 mph5 km/h from NE, gusts 4 mph7 km/h	72%	9%	3
Sat 5p	Sunny	38°3° (likely 35°2° to 42°6°)	38°3°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	72%	9%	2
Sat 6p	Mostly clear	34°1° (likely 32°0° to 39°4°)	34°1°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	83%	17%	1
Sat 7p	Clear	33°1° (likely 29°−2° to 36°2°)	33°1°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	83%	18%	0
Sat 8p	Clear	31°−1° (likely 29°−2° to 34°1°)	31°−1°	0%	2 mph3 km/h from SSW, gusts 3 mph6 km/h	83%	12%	0
Sat 9p	Clear	30°−1° (likely 28°−2° to 34°1°)	26°−3°	0%	3 mph5 km/h from S, gusts 3 mph4 km/h	83%	13%	0
Sat 10p	Partly cloudy	30°−1° (likely 27°−3° to 33°1°)	30°−1°	0%	2 mph3 km/h from SSE, gusts 3 mph4 km/h	82%	29%	0
Sat 11p	Clear	30°−1° (likely 27°−3° to 33°1°)	30°−1°	0%	2 mph3 km/h from S, gusts 3 mph5 km/h	80%	18%	0
Sun 12a	Clear	29°−2° (likely 27°−3° to 32°0°)	29°−2°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	78%	8%	0
Sun 1a	Clear	29°−2° (likely 27°−3° to 31°−1°)	29°−2°	0%	1 mph2 km/h from S, gusts 4 mph6 km/h	74%	14%	0
Sun 2a	Clear	29°−2° (likely 26°−3° to 31°−1°)	29°−2°	0%	1 mph2 km/h from ESE, gusts 4 mph6 km/h	71%	12%	0
Sun 3a	Clear	28°−2° (likely 25°−4° to 31°−1°)	28°−2°	0%	1 mph2 km/h from ENE, gusts 4 mph6 km/h	71%	0%	0
Sun 4a	Clear	27°−3° (likely 24°−4° to 31°−1°)	27°−3°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	83%	3%	0
Sun 5a	Clear	27°−3° (likely 23°−5° to 31°−1°)	27°−3°	0%	1 mph2 km/h from NE, gusts 4 mph6 km/h	83%	7%	0
Sun 6a	Clear	26°−3° (likely 23°−5° to 29°−2°)	26°−3°	0%	2 mph3 km/h from NE, gusts 6 mph9 km/h	83%	21%	0
Sun 7a	Clear	26°−3° (likely 22°−6° to 28°−2°)	26°−3°	0%	2 mph3 km/h from NE, gusts 6 mph10 km/h	83%	23%	0
Sun 8a	Partly sunny	25°−4° (likely 22°−6° to 28°−2°)	25°−4°	0%	2 mph3 km/h from ENE, gusts 5 mph9 km/h	83%	34%	0
Sun 9a	Partly sunny	26°−3° (likely 23°−5° to 28°−2°)	22°−6°	0%	3 mph5 km/h from ENE, gusts 8 mph12 km/h	83%	71%	0
Sun 10a	Partly sunny	28°−2° (likely 25°−4° to 30°−1°)	24°−4°	0%	3 mph5 km/h from ENE, gusts 8 mph13 km/h	83%	79%	1
Sun 11a	Mostly sunny	30°−1° (likely 27°−3° to 33°1°)	25°−4°	0%	5 mph8 km/h from ENE, gusts 10 mph16 km/h	83%	83%	1
Sun 12p	Mostly sunny	31°−1° (likely 28°−2° to 35°2°)	25°−4°	0%	6 mph10 km/h from ENE, gusts 10 mph16 km/h	83%	85%	2
Sun 1p	Mostly sunny	32°0° (likely 29°−2° to 36°2°)	26°−3°	0%	6 mph10 km/h from ENE, gusts 10 mph17 km/h	87%	88%	2
Sun 2p	Partly sunny	33°1° (likely 29°−2° to 37°3°)	28°−2°	0%	6 mph10 km/h from ENE, gusts 11 mph17 km/h	87%	88%	2
Sun 3p	Partly sunny	34°1° (likely 30°−1° to 38°3°)	30°−1°	0%	5 mph8 km/h from ENE, gusts 11 mph18 km/h	85%	86%	2
Sun 4p	Cloudy	34°1° (likely 30°−1° to 37°3°)	30°−1°	0%	5 mph8 km/h from ENE, gusts 10 mph16 km/h	83%	85%	2
Sun 5p	Mostly cloudy	33°1° (likely 29°−2° to 36°2°)	29°−2°	0%	5 mph8 km/h from ENE, gusts 10 mph16 km/h	85%	84%	1
Sun 6p	Mostly cloudy	30°−1° (likely 28°−2° to 35°2°)	30°−1°	0%	2 mph3 km/h from ENE, gusts 10 mph15 km/h	85%	83%	0
Sun 7p	Mostly cloudy	29°−2° (likely 27°−3° to 32°0°)	29°−2°	0%	2 mph3 km/h from ENE, gusts 9 mph15 km/h	85%	80%	0
Sun 8p	Mostly cloudy	27°−3° (likely 26°−3° to 32°0°)	27°−3°	0%	2 mph3 km/h from ENE, gusts 8 mph13 km/h	85%	71%	0
Sun 9p	Mostly cloudy	27°−3° (likely 25°−4° to 32°0°)	27°−3°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	85%	72%	0
Sun 10p	Mostly cloudy	27°−3° (likely 24°−4° to 32°0°)	27°−3°	0%	2 mph3 km/h from E, gusts 6 mph9 km/h	85%	79%	0
Sun 11p	Cloudy	27°−3° (likely 24°−4° to 31°−1°)	27°−3°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	85%	91%	0
Mon 12a	Cloudy	27°−3° (likely 24°−4° to 31°−1°)	27°−3°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	85%	93%	0
Mon 1a	Mostly cloudy	27°−3° (likely 24°−4° to 30°−1°)	27°−3°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	80%	89%	0
Mon 2a	Cloudy	27°−3° (likely 24°−4° to 30°−1°)	27°−3°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	79%	95%	0
Mon 3a	Cloudy	26°−3° (likely 24°−4° to 30°−1°)	22°−6°	0%	3 mph5 km/h from SE, gusts 7 mph11 km/h	78%	96%	0
Mon 4a	Mostly cloudy	26°−3° (likely 24°−4° to 29°−2°)	22°−6°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	79%	95%	0
Mon 5a	Mostly cloudy	26°−3° (likely 24°−4° to 30°−1°)	22°−6°	0%	3 mph5 km/h from SE, gusts 5 mph9 km/h	78%	92%	0
Mon 6a	Mostly cloudy	25°−4° (likely 23°−5° to 29°−2°)	19°−7°	0%	5 mph8 km/h from SE, gusts 5 mph9 km/h	78%	69%	0
Mon 7a	Cloudy	27°−3° (likely 24°−4° to 30°−1°)	22°−6°	0%	5 mph8 km/h from SE, gusts 6 mph10 km/h	75%	83%	0
Mon 8a	Cloudy	28°−2° (likely 24°−4° to 31°−1°)	23°−5°	0%	5 mph8 km/h from SE, gusts 6 mph9 km/h	73%	83%	0
Mon 9a	Mostly cloudy	28°−2° (likely 26°−3° to 33°1°)	22°−6°	0%	6 mph10 km/h from S, gusts 5 mph7 km/h	72%	67%	0
Mon 10a	Mostly sunny	31°−1° (likely 31°−1° to 39°4°)	25°−4°	0%	6 mph10 km/h from S, gusts 6 mph9 km/h	72%	64%	1
Mon 11a	Mostly cloudy	36°2° (likely 35°2° to 43°6°)	31°−1°	0%	6 mph10 km/h from S, gusts 6 mph9 km/h	73%	56%	2
Mon 12p	Partly sunny	40°4° (likely 38°3° to 46°8°)	36°2°	5%	6 mph10 km/h from SE, gusts 7 mph11 km/h	73%	60%	3
Mon 1p	Partly sunny	42°6° (likely 42°6° to 49°9°)	38°3°	5%	6 mph10 km/h from SE, gusts 9 mph14 km/h	71%	64%	3
Mon 2p	Partly sunny	44°7° (likely 43°6° to 51°11°)	41°5°	5%	6 mph10 km/h from SE, gusts 9 mph14 km/h	70%	91%	3

Days ahead

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

Today, Oct 24. Mostly sunny. High 38°3°, low 25°−4°. Typical 53°12° / 30°−1°. Dry. Forecasts differ.
1. Afternoon
  noon–6 PM
  Sunny, 38°3°
  Dry
2. Evening
  6 PM–midnight
  Clear, 31°−1°
  Dry
3. Overnight
  midnight–6 AM
  Clear, 27°−3°
  Dry
Official NWS forecast
Today: Sunny, with a high near 38. Northeast wind around 3 mph.
Tonight: Mostly clear, with a low around 25. Southeast wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
35°2°–45°7°
Low, likely
17°−8°–25°−4°
Typical high / low
53°12° / 30°−1°
Wind
11 mph17 km/h, gusts 16 mph26 km/h
UV peak
4
Tomorrow, Oct 25. Cloudy. High 34°1°, low 24°−4°. Typical 53°12° / 30°−1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 25°−4°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 34°1°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 27°−3°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 26°−3°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 34. Northeast wind 2 to 6 mph.
Night: Mostly cloudy, with a low around 24. East wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
32°0°–38°3°
Low, likely
22°−6°–27°−3°
Typical high / low
53°12° / 30°−1°
Wind
7 mph11 km/h, gusts 15 mph25 km/h
UV peak
2
Monday, Oct 26. Mostly cloudy. High 44°7°, low 32°0°. Typical 52°11° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly cloudy, 28°−2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Clear, 37°3°
  40% chance · 0.2 in0.5 cm
4. Overnight
  midnight–6 AM
  Cloudy, 36°2°
  50% chance · 0.3 in0.8 cm
Official NWS forecast
Day: Partly sunny, with a high near 44. South southeast wind around 6 mph.
Night: Rain and snow likely. Mostly cloudy, with a low around 32. South southwest wind around 6 mph. Chance of precipitation is 60%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
44°7°–52°11°
Low, likely
23°−5°–32°0°
Typical high / low
52°11° / 30°−1°
Wind
6 mph9 km/h, gusts 14 mph23 km/h
UV peak
3
Tuesday, Oct 27. Snow. High 39°4°, low 27°−3°. Typical 52°11° / 29°−2°. Snow 0–3 in0–8 cm, 50% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 36°2°
  50% chance · 0.3 in0.6 cm
2. Afternoon
  noon–6 PM
  Drizzle, 42°5°
  30% chance · 0.01 in0.3 mm
3. Evening
  6 PM–midnight
  Clear, 36°2°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 31°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow before 3pm, then a chance of rain and snow. Mostly cloudy, with a high near 39. West wind 7 to 16 mph, with gusts as high as 26 mph. New snow accumulation of less than one inch possible.
Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 27. West southwest wind 7 to 10 mph, with gusts as high as 21 mph. Little or no snow accumulation expected.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
39°4°–44°7°
Low, likely
27°−3°–35°2°
Typical high / low
52°11° / 29°−2°
Wind
19 mph31 km/h, gusts 45 mph72 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 40°4°, low 27°−3°. Typical 51°11° / 29°−2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 30°−1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 33°1°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 30°−1°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 40.
Night: Mostly cloudy, with a low around 27.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
40°4°–46°8°
Low, likely
26°−3°–30°−1°
Typical high / low
51°11° / 29°−2°
Wind
13 mph21 km/h, gusts 30 mph49 km/h
UV peak
4
Thursday, Oct 29. Mostly cloudy. High 38°3°, low 26°−3°. Typical 51°11° / 28°−2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 31°−1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 46°8°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 36°2°
  40% chance · 0.04 in1 mm
4. Overnight
  midnight–6 AM
  Cloudy, 30°−1°
  40% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 38.
Night: A chance of snow. Mostly cloudy, with a low around 26. New snow accumulation of less than half an inch possible.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
38°3°–48°9°
Low, likely
26°−3°–30°−1°
Typical high / low
51°11° / 28°−2°
Wind
8 mph13 km/h, gusts 24 mph38 km/h
UV peak
3
Friday, Oct 30. Snow. High 37°3°, low 25°−4°. Typical 50°10° / 28°−2°. Snow 0.08 in2 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Fog, 30°−1°
  40% chance
2. Afternoon
  noon–6 PM
  Drizzle, 38°3°
  30% chance
3. Evening
  6 PM–midnight
  Drizzle, 33°0°
  30% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Snow, 26°−3°
  20% chance · 0.02 in0.5 mm
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of snow. Partly sunny, with a high near 37. New snow accumulation of less than half an inch possible.
Night: A slight chance of snow. Mostly cloudy, with a low around 25.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
31°−1°–43°6°
Low, likely
23°−5°–32°0°
Typical high / low
50°10° / 28°−2°
Wind
5 mph7 km/h, gusts 17 mph28 km/h
UV peak
2
Saturday, Oct 31. Snow. High 36°2°, low 25°−4°. Typical 50°10° / 28°−2°. Snow 0.05 in1.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 27°−3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 35°2°
  Dry
3. Evening
  6 PM–midnight
  Clear, 30°−1°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 30°−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
33°1°–44°7°
Low, likely
19°−7°–31°−1°
Typical high / low
50°10° / 28°−2°
Wind
22 mph35 km/h, gusts 36 mph58 km/h
UV peak
3
Sunday, Nov 1. Snow. High 39°4°, low 27°−3°. Typical 49°9° / 27°−3°. Snow 0–5 in0–13 cm, 10% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 40°4°
  Dry
3. Evening
  6 PM–midnight
  Clear, 35°2°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 35°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
35°2°–43°6°
Low, likely
25°−4°–30°−1°
Typical high / low
49°9° / 27°−3°
Wind
22 mph35 km/h, gusts 42 mph68 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 42°6°, low 29°−2°. Typical 49°9° / 27°−3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 44°7°
  Dry
3. Evening
  6 PM–midnight
  Clear, 32°0°
  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
36°2°–49°9°
Low, likely
26°−3°–32°0°
Typical high / low
49°9° / 27°−3°
Wind
13 mph21 km/h, gusts 49 mph79 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 38°, low 25°.
Tomorrow
Dry, high 34°, low 24°, cooling off.
Monday
Dry, high 44°, low 32°, warming up.
Rest of week
Highs 36–42°; chance of precipitation on Tuesday.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (TFX) (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

Clark Fork River at Deer Lodge

24 mi

Below flood stage

Level: 3.0 ft
Flow: 306 cfs

Forecast peak 3.0 ft Sat 6 PM

Reading from Sat 1:30 PM · NWS gauge page

Tenmile Creek (MT) near Rimini

2.2 mi

Level: 1.9 ft
Flow: 13 cfs

Reading from Sat 2:45 PM · NWS gauge page

Tenmile Creek (MT) near Helena

11 mi

Below flood stage

Level: 2.7 ft
Flow: 44 cfs

Reading from Sat 2:15 PM · NWS gauge page

Prickly Pear Creek near Clancy

15 mi

Level: 0.9 ft
Flow: 39 cfs

Reading from Sat 2:30 PM · NWS gauge page

For your home

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

Pipes: watch the cold

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.

Heating this week

About 60% less heating than a typical week.

This week 68Typical 172

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 47
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 16 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 30°F).

Open the windows?

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

Is this typical?

Helena Airport Asos · official normals 1991–2020 · records 1880–2026

Oct 24, today vs a typical year

Today’s expected high is 15°8° colder than typical.

Last 7 days vs normal

On average 5°3° warmer than normal (daily mean temperature).

+6°+3°SunOct 18
+5°+3°MonOct 19
+6°+3°TueOct 20
+5°+3°WedOct 21
+8°+4°ThuOct 22
−1°FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 27 min; Losing 3 min 8 s a day; shortest Dec 21, 1 h 52 min less
Golden hour: 5:43–6:45 PM; Morning 7:40–8:41 AM
Blue hour: 6:45–6:57 PM; Morning 7:28–7:40 AM; first light 7:28 AM

Stars tonight? Fair

Mostly clear 11 PM–7:29 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 6:14 AM · rises 5:27 PM
Full moon: Oct 25
New moon: Nov 9

Looking south from Rimini. The highest point on the skyline is about 8,200 ft, 5 mi away.Skyline from USGS elevation data, heights drawn up to 2× taller. Sky, sun and moon as they are now.