Monthly outlook for Agency, MT: average high 54.8°, average low 38.8°. That is 2.7° above the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 7 days and 1.5 inches. The warmest day looks like 22 October (67.9°), the coolest 1 November (32°).
54.8°/38.8°
Average high / low
+2.7°
Above normal
5 / 7
Wet days / normal
1.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
56.8°
51.8°
+2.8°
31 October – 9 November
51.3°
45.9°
+3°
10 November – 19 November
at normal
41.7°
—
October records over 66 years
85.6°1 October 1992All-time high
-2.2°25 October 2020All-time low
Climate normals and records are computed from the nearest reference point — St. Ignatius (9 mi).
Thu, 2268° / 40°0
68 °
Agency, Thursday, 22 October
Mostly clear. High 68°, low 40°.
Pressure29.88 inHg
Wind2.3 mph N
Humidity58%
Visibility6.2 mi
Dew point42°
Fri, 2354° / 47°0.58
54 °
Agency, Friday, 23 October
Rain. High 54°, low 47°.
Pressure29.88 inHg
Wind3.2 mph W
Humidity92%
Visibility2.4 mi
Dew point50°
Sat, 2455° / 38°0
55 °
Agency, Saturday, 24 October
Overcast. High 55°, low 38°.
Pressure30.30 inHg
Wind2.3 mph NE
Humidity64%
Visibility6.2 mi
Dew point36°
Sun, 2556° / 39°0
56 °
Agency, Sunday, 25 October
Overcast. High 56°, low 39°.
Pressure30.27 inHg
Wind1 mph N
Humidity66%
Visibility6.2 mi
Dew point37°
Mon, 2651° / 36°0
51 °
Agency, Monday, 26 October
Clear. High 51°, low 36°.
Pressure30.39 inHg
Wind2.7 mph W
Humidity72%
Visibility—
Dew point35°
Tue, 2752° / 42°0.11
52 °
Agency, Tuesday, 27 October
Light rain. High 52°, low 42°.
Pressure30.03 inHg
Wind3.2 mph N
Humidity62%
Visibility—
Dew point37°
Wed, 2855° / 44°0.11
55 °
Agency, Wednesday, 28 October
Light rain. High 55°, low 44°.
Pressure30.27 inHg
Wind3.5 mph S
Humidity75%
Visibility—
Dew point41°
Thu, 2956° / 38°0
56 °
Agency, Thursday, 29 October
Clear. High 56°, low 38°.
Pressure30.06 inHg
Wind5.1 mph S
Humidity61%
Visibility—
Dew point35°
Fri, 3058° / 38°0
58 °
Agency, Friday, 30 October
Light rain. High 58°, low 38°.
Pressure29.68 inHg
Wind7.2 mph NW
Humidity49%
Visibility—
Dew point31°
Sat, 3146° / 38°0.06
46 °
Agency, Saturday, 31 October
Light rain. High 46°, low 38°.
Pressure29.83 inHg
Wind9.1 mph W
Humidity59%
Visibility—
Dew point31°
Sun, 0151° / 32°0
51 °
Agency, Sunday, 1 November
Mostly clear. High 51°, low 32°.
Pressure30.12 inHg
Wind7.8 mph S
Humidity52%
Visibility—
Dew point27°
Mon, 0255° / 36°0
55 °
Agency, Monday, 2 November
Partly cloudy. High 55°, low 36°.
Pressure30.21 inHg
Wind7.9 mph S
Humidity46%
Visibility—
Dew point28°
Tue, 0355° / 37°0
55 °
Agency, Tuesday, 3 November
Overcast. High 55°, low 37°.
Pressure30.06 inHg
Wind6.4 mph S
Humidity46%
Visibility—
Dew point28°
Wed, 0454° / 40°0
54 °
Agency, Wednesday, 4 November
Overcast. High 54°, low 40°.
Pressure29.88 inHg
Wind6.4 mph S
Humidity67%
Visibility—
Dew point38°
Thu, 0547° / 38°0.18
47 °
Agency, Thursday, 5 November
Rain. High 47°, low 38°.
Pressure29.71 inHg
Wind11.4 mph W
Humidity58%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0646° / 31°0.13
46 °
Agency, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low31°
Average precipitation0.13 in
Chance of precipitation58%
Record high63° (2010)
Record low2° (2003)
Sat, 0744° / 30°0.13
44 °
Agency, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.13 in
Chance of precipitation47%
Record high58° (1978)
Record low8° (2000)
Sun, 0844° / 30°0.09
44 °
Agency, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.09 in
Chance of precipitation50%
Record high60° (2016)
Record low9° (2000)
Mon, 0944° / 30°0.1
44 °
Agency, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.1 in
Chance of precipitation48%
Record high64° (2016)
Record low11° (1986)
Tue, 1043° / 28°0.07
43 °
Agency, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high43°
Average low28°
Average precipitation0.07 in
Chance of precipitation40%
Record high62° (2016)
Record low-10° (1986)
Wed, 1142° / 27°0.09
42 °
Agency, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low27°
Average precipitation0.09 in
Chance of precipitation37%
Record high61° (2016)
Record low-2° (2000)
Thu, 1242° / 28°0.11
42 °
Agency, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.11 in
Chance of precipitation48%
Record high66° (1999)
Record low0° (1986)
Fri, 1342° / 29°0.1
42 °
Agency, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.1 in
Chance of precipitation52%
Record high65° (2025)
Record low4° (2000)
Sat, 1442° / 28°0.09
42 °
Agency, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.09 in
Chance of precipitation40%
Record high62° (1999)
Record low2° (2000)
Sun, 1543° / 27°0.04
43 °
Agency, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.04 in
Chance of precipitation30%
Record high62° (2021)
Record low5° (2014)
Mon, 1642° / 28°0.1
42 °
Agency, Monday, 16 November
Climate normal for this date — 60-year average.
Average high42°
Average low28°
Average precipitation0.1 in
Chance of precipitation52%
Record high57° (2001)
Record low6° (1996)
Tue, 1741° / 29°0.09
41 °
Agency, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.09 in
Chance of precipitation52%
Record high57° (1976)
Record low4° (1961)
Wed, 1840° / 28°0.11
40 °
Agency, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.11 in
Chance of precipitation52%
Record high60° (2008)
Record low1° (2022)
Thu, 1939° / 27°0.09
39 °
Agency, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.09 in
Chance of precipitation43%
Record high53° (2008)
Record low0° (2000)
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 Agency, 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 Agency, 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.