Monthly outlook for Byrne, MT: average high 44.9°, average low 30.6°. That is 6.5° above the climate normal for November. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 6 days and 0.9 inches. The warmest day looks like 13 November (57.8°), the coolest 22 November (19.5°).
44.9°/30.6°
Average high / low
+6.5°
Above normal
4 / 6
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 November – 20 November
47.5°
34.9°
+7°
21 November – 30 November
40.5°
29.5°
+6.1°
1 December – 10 December
at normal
26.6°
—
November records over 66 years
58.5°5 November 1980All-time high
-32.6°10 November 1986All-time low
Climate normals and records are computed from the nearest reference point — Springtown (11 mi).
Thu, 1256° / 37°0
56 °
Byrne, Thursday, 12 November
Overcast. High 56°, low 37°.
Pressure29.97 inHg
Wind1.7 mph SE
Humidity42%
Visibility6.2 mi
Dew point31°
Fri, 1358° / 36°0
58 °
Byrne, Friday, 13 November
Overcast. High 58°, low 36°.
Pressure29.62 inHg
Wind1.8 mph E
Humidity45%
Visibility6.2 mi
Dew point29°
Sat, 1450° / 35°0
50 °
Byrne, Saturday, 14 November
Overcast. High 50°, low 35°.
Pressure29.77 inHg
Wind8.1 mph W
Humidity66%
Visibility6.2 mi
Dew point36°
Sun, 1552° / 32°0
52 °
Byrne, Sunday, 15 November
Clear. High 52°, low 32°.
Pressure29.91 inHg
Wind1.3 mph NE
Humidity59%
Visibility6.2 mi
Dew point31°
Mon, 1648° / 34°0.12
48 °
Byrne, Monday, 16 November
Light rain. High 48°, low 34°.
Pressure29.91 inHg
Wind5.5 mph W
Humidity62%
Visibility—
Dew point33°
Tue, 1740° / 36°0
40 °
Byrne, Tuesday, 17 November
Overcast. High 40°, low 36°.
Pressure30.06 inHg
Wind2 mph W
Humidity95%
Visibility—
Dew point37°
Wed, 1839° / 36°0.06
39 °
Byrne, Wednesday, 18 November
Light snow. High 39°, low 36°.
Pressure29.91 inHg
Wind2.6 mph NW
Humidity97%
Visibility—
Dew point38°
Thu, 1938° / 35°0.12
38 °
Byrne, Thursday, 19 November
Light snow. High 38°, low 35°.
Pressure29.97 inHg
Wind3 mph NW
Humidity96%
Visibility—
Dew point36°
Fri, 2039° / 24°0.07
39 °
Byrne, Friday, 20 November
Snow. High 39°, low 24°.
Pressure30.21 inHg
Wind3.8 mph SE
Humidity81%
Visibility—
Dew point32°
Sat, 2134° / 20°0
34 °
Byrne, Saturday, 21 November
Partly cloudy. High 34°, low 20°.
Pressure30.45 inHg
Wind4.3 mph E
Humidity59%
Visibility—
Dew point17°
Sun, 2240° / 19°0
40 °
Byrne, Sunday, 22 November
Partly cloudy. High 40°, low 19°.
Pressure30.21 inHg
Wind3.3 mph NW
Humidity50%
Visibility—
Dew point16°
Mon, 2342° / 23°0
42 °
Byrne, Monday, 23 November
Mostly clear. High 42°, low 23°.
Pressure30.30 inHg
Wind3.4 mph NW
Humidity49%
Visibility—
Dew point17°
Tue, 2444° / 25°0
44 °
Byrne, Tuesday, 24 November
Overcast. High 44°, low 25°.
Pressure30.27 inHg
Wind4 mph NW
Humidity50%
Visibility—
Dew point19°
Wed, 2542° / 28°0
42 °
Byrne, Wednesday, 25 November
Overcast. High 42°, low 28°.
Pressure30.18 inHg
Wind2.9 mph W
Humidity53%
Visibility—
Dew point22°
Thu, 2640° / 31°0
40 °
Byrne, Thursday, 26 November
Light rain. High 40°, low 31°.
Pressure30.33 inHg
Wind4.5 mph W
Humidity88%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2729° / 13°0.05
29 °
Byrne, Friday, 27 November
Climate normal for this date — 60-year average.
Average high29°
Average low13°
Average precipitation0.05 in
Chance of precipitation37%
Record high47° (2017)
Record low-16° (1967)
Sat, 2829° / 13°0.06
29 °
Byrne, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high29°
Average low13°
Average precipitation0.06 in
Chance of precipitation33%
Record high50° (2021)
Record low-6° (1981)
Sun, 2928° / 11°0.05
28 °
Byrne, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high28°
Average low11°
Average precipitation0.05 in
Chance of precipitation35%
Record high44° (2021)
Record low-8° (1985)
Mon, 3028° / 12°0.05
28 °
Byrne, Monday, 30 November
Climate normal for this date — 60-year average.
Average high28°
Average low12°
Average precipitation0.05 in
Chance of precipitation25%
Record high43° (1969)
Record low-22° (1991)
Tue, 0128° / 11°0.07
28 °
Byrne, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high28°
Average low11°
Average precipitation0.07 in
Chance of precipitation40%
Record high52° (2021)
Record low-23° (1985)
Wed, 0229° / 11°0.12
29 °
Byrne, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high29°
Average low11°
Average precipitation0.12 in
Chance of precipitation47%
Record high47° (2021)
Record low-17° (1985)
Thu, 0328° / 11°0.05
28 °
Byrne, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high28°
Average low11°
Average precipitation0.05 in
Chance of precipitation32%
Record high42° (1987)
Record low-20° (1984)
Fri, 0427° / 9°0.06
27 °
Byrne, Friday, 4 December
Climate normal for this date — 60-year average.
Average high27°
Average low9°
Average precipitation0.06 in
Chance of precipitation30%
Record high41° (2024)
Record low-26° (1972)
Sat, 0526° / 8°0.05
26 °
Byrne, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high26°
Average low8°
Average precipitation0.05 in
Chance of precipitation33%
Record high46° (2023)
Record low-41° (1972)
Sun, 0626° / 8°0.07
26 °
Byrne, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high26°
Average low8°
Average precipitation0.07 in
Chance of precipitation33%
Record high46° (2023)
Record low-31° (1972)
Mon, 0725° / 8°0.06
25 °
Byrne, Monday, 7 December
Climate normal for this date — 60-year average.
Average high25°
Average low8°
Average precipitation0.06 in
Chance of precipitation40%
Record high48° (2024)
Record low-26° (2005)
Tue, 0825° / 7°0.04
25 °
Byrne, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high25°
Average low7°
Average precipitation0.04 in
Chance of precipitation38%
Record high45° (2020)
Record low-39° (1972)
Wed, 0925° / 7°0.06
25 °
Byrne, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high25°
Average low7°
Average precipitation0.06 in
Chance of precipitation33%
Record high47° (2020)
Record low-37° (1972)
Thu, 1027° / 10°0.06
27 °
Byrne, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high27°
Average low10°
Average precipitation0.06 in
Chance of precipitation35%
Record high44° (2025)
Record low-32° (1972)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Byrne, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Byrne, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.