Monthly outlook for Primrose, MT: average high 57.6°, average low 37.2°. That is 4.2° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 1.1 inches. The warmest day looks like 24 October (71.2°), the coolest 13 October (25.6°).
57.6°/37.2°
Average high / low
+4.2°
Above normal
3 / 5
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
54.4°
51°
+1.9°
20 October – 29 October
63.1°
46.6°
+9.2°
30 October – 8 November
at normal
40.5°
—
October records over 66 years
78.4°1 October 1992All-time high
-12.5°29 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Evaro (12 mi).
Sun, 1138° / 33°0.26
38 °
Primrose, Sunday, 11 October
Snow. High 38°, low 33°.
Pressure29.97 inHg
Wind0.9 mph N
Humidity90%
Visibility4.7 mi
Dew point33°
Mon, 1242° / 28°0.22
42 °
Primrose, Monday, 12 October
Snow. High 42°, low 28°.
Pressure30.12 inHg
Wind0.3 mph NE
Humidity83%
Visibility6.2 mi
Dew point30°
Tue, 1349° / 26°0
49 °
Primrose, Tuesday, 13 October
Clear. High 49°, low 26°.
Pressure30.18 inHg
Wind0.8 mph S
Humidity67%
Visibility6.2 mi
Dew point31°
Wed, 1454° / 31°0
54 °
Primrose, Wednesday, 14 October
Partly cloudy. High 54°, low 31°.
Pressure30.27 inHg
Wind1.4 mph SE
Humidity59%
Visibility6.2 mi
Dew point29°
Thu, 1560° / 34°0
60 °
Primrose, Thursday, 15 October
Clear. High 60°, low 34°.
Pressure30.50 inHg
Wind4.8 mph SE
Humidity55%
Visibility—
Dew point33°
Fri, 1653° / 37°0
53 °
Primrose, Friday, 16 October
Overcast. High 53°, low 37°.
Pressure30.59 inHg
Wind4.9 mph SE
Humidity38%
Visibility—
Dew point21°
Sat, 1762° / 34°0
62 °
Primrose, Saturday, 17 October
Overcast. High 62°, low 34°.
Pressure30.27 inHg
Wind3.1 mph SE
Humidity35%
Visibility—
Dew point23°
Sun, 1870° / 42°0
70 °
Primrose, Sunday, 18 October
Overcast. High 70°, low 42°.
Pressure30.06 inHg
Wind11.1 mph W
Humidity29%
Visibility—
Dew point26°
Mon, 1967° / 42°0
67 °
Primrose, Monday, 19 October
Overcast. High 67°, low 42°.
Pressure30.06 inHg
Wind4.4 mph SE
Humidity38%
Visibility—
Dew point30°
Tue, 2055° / 43°0.03
55 °
Primrose, Tuesday, 20 October
Light rain. High 55°, low 43°.
Pressure30.03 inHg
Wind14.4 mph W
Humidity75%
Visibility—
Dew point40°
Wed, 2152° / 39°0.02
52 °
Primrose, Wednesday, 21 October
Light rain. High 52°, low 39°.
Pressure30.24 inHg
Wind5.4 mph W
Humidity68%
Visibility—
Dew point37°
Thu, 2261° / 34°0
61 °
Primrose, Thursday, 22 October
Partly cloudy. High 61°, low 34°.
Pressure30.42 inHg
Wind4.4 mph SE
Humidity43%
Visibility—
Dew point27°
Fri, 2369° / 40°0
69 °
Primrose, Friday, 23 October
Overcast. High 69°, low 40°.
Pressure30.18 inHg
Wind4.6 mph SE
Humidity32%
Visibility—
Dew point27°
Sat, 2471° / 47°0
71 °
Primrose, Saturday, 24 October
Overcast. High 71°, low 47°.
Pressure30.03 inHg
Wind3.8 mph SE
Humidity35%
Visibility—
Dew point33°
Sun, 2570° / 49°0
70 °
Primrose, Sunday, 25 October
Overcast. High 70°, low 49°.
Pressure30.09 inHg
Wind4.2 mph SE
Humidity39%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2645° / 30°0.09
45 °
Primrose, Monday, 26 October
Climate normal for this date — 60-year average.
Average high45°
Average low30°
Average precipitation0.09 in
Chance of precipitation43%
Record high61° (1986)
Record low-1° (2020)
Tue, 2744° / 28°0.07
44 °
Primrose, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.07 in
Chance of precipitation38%
Record high59° (1998)
Record low6° (2019)
Wed, 2844° / 28°0.08
44 °
Primrose, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high44°
Average low28°
Average precipitation0.08 in
Chance of precipitation38%
Record high60° (2008)
Record low7° (2023)
Thu, 2943° / 27°0.06
43 °
Primrose, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.06 in
Chance of precipitation40%
Record high61° (1962)
Record low-12° (2019)
Fri, 3042° / 26°0.05
42 °
Primrose, Friday, 30 October
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.05 in
Chance of precipitation28%
Record high59° (1962)
Record low-5° (2019)
Sat, 3141° / 27°0.09
41 °
Primrose, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.09 in
Chance of precipitation43%
Record high60° (2014)
Record low0° (1996)
Sun, 0142° / 26°0.09
42 °
Primrose, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high42°
Average low26°
Average precipitation0.09 in
Chance of precipitation38%
Record high58° (1988)
Record low-2° (1984)
Mon, 0241° / 27°0.1
41 °
Primrose, Monday, 2 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.1 in
Chance of precipitation33%
Record high58° (1981)
Record low-1° (1991)
Tue, 0341° / 27°0.05
41 °
Primrose, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high41°
Average low27°
Average precipitation0.05 in
Chance of precipitation32%
Record high58° (1981)
Record low-7° (1973)
Wed, 0441° / 28°0.1
41 °
Primrose, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.1 in
Chance of precipitation52%
Record high56° (1980)
Record low-7° (1973)
Thu, 0540° / 27°0.09
40 °
Primrose, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high40°
Average low27°
Average precipitation0.09 in
Chance of precipitation45%
Record high58° (1980)
Record low-8° (2003)
Fri, 0640° / 25°0.1
40 °
Primrose, Friday, 6 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.1 in
Chance of precipitation47%
Record high58° (2012)
Record low-1° (2003)
Sat, 0739° / 25°0.11
39 °
Primrose, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.11 in
Chance of precipitation50%
Record high53° (1978)
Record low2° (2003)
Sun, 0838° / 24°0.07
38 °
Primrose, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.07 in
Chance of precipitation43%
Record high56° (2016)
Record low-1° (1994)
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 Primrose, 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 Primrose, 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.