Monthly outlook for Nashua, MT: average high 56.1°, average low 40.6°. That is 0.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 24 October (71.8°), the coolest 13 October (30.1°).
56.1°/40.6°
Average high / low
+0.3°
Above normal
2 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
52.3°
56.3°
-2.2°
20 October – 29 October
62.3°
52.4°
+5.5°
30 October – 8 November
at normal
46.3°
—
October records over 66 years
86.9°2 October 1997All-time high
4.8°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Fort Peck (10 mi).
Sun, 1145° / 35°0.3
45 °
Nashua, Sunday, 11 October
Light rain. High 45°, low 35°.
Pressure30.06 inHg
Wind12.1 mph NE
Humidity87%
Visibility3.2 mi
Dew point38°
Mon, 1239° / 33°0.5
39 °
Nashua, Monday, 12 October
Snow. High 39°, low 33°.
Pressure30.12 inHg
Wind4 mph N
Humidity90%
Visibility6.2 mi
Dew point34°
Tue, 1350° / 30°0
50 °
Nashua, Tuesday, 13 October
Clear. High 50°, low 30°.
Pressure30.06 inHg
Wind5.1 mph SW
Humidity67%
Visibility3.3 mi
Dew point35°
Wed, 1455° / 30°0
55 °
Nashua, Wednesday, 14 October
Clear. High 55°, low 30°.
Pressure30.27 inHg
Wind3.8 mph S
Humidity59%
Visibility6.2 mi
Dew point35°
Thu, 1558° / 37°0
58 °
Nashua, Thursday, 15 October
Clear. High 58°, low 37°.
Pressure30.50 inHg
Wind9.5 mph N
Humidity44%
Visibility—
Dew point32°
Fri, 1641° / 33°0
41 °
Nashua, Friday, 16 October
Clear. High 41°, low 33°.
Pressure30.74 inHg
Wind14.8 mph N
Humidity50%
Visibility—
Dew point21°
Sat, 1752° / 31°0
52 °
Nashua, Saturday, 17 October
Clear. High 52°, low 31°.
Pressure30.36 inHg
Wind19.1 mph SE
Humidity28%
Visibility—
Dew point13°
Sun, 1860° / 40°0
60 °
Nashua, Sunday, 18 October
Overcast. High 60°, low 40°.
Pressure29.91 inHg
Wind11 mph SE
Humidity37%
Visibility—
Dew point26°
Mon, 1967° / 49°0
67 °
Nashua, Monday, 19 October
Partly cloudy. High 67°, low 49°.
Pressure30.00 inHg
Wind11.7 mph W
Humidity32%
Visibility—
Dew point31°
Tue, 2067° / 55°0
67 °
Nashua, Tuesday, 20 October
Overcast. High 67°, low 55°.
Pressure29.68 inHg
Wind23.7 mph W
Humidity31%
Visibility—
Dew point33°
Wed, 2154° / 43°0
54 °
Nashua, Wednesday, 21 October
Overcast. High 54°, low 43°.
Pressure30.00 inHg
Wind27 mph W
Humidity51%
Visibility—
Dew point33°
Thu, 2249° / 41°0
49 °
Nashua, Thursday, 22 October
Overcast. High 49°, low 41°.
Pressure30.53 inHg
Wind20.8 mph NW
Humidity56%
Visibility—
Dew point30°
Fri, 2366° / 41°0
66 °
Nashua, Friday, 23 October
Clear. High 66°, low 41°.
Pressure30.15 inHg
Wind14.3 mph S
Humidity35%
Visibility—
Dew point28°
Sat, 2472° / 52°0
72 °
Nashua, Saturday, 24 October
Overcast. High 72°, low 52°.
Pressure29.91 inHg
Wind4.4 mph S
Humidity29%
Visibility—
Dew point32°
Sun, 2566° / 54°0
66 °
Nashua, Sunday, 25 October
Partly cloudy. High 66°, low 54°.
Pressure30.03 inHg
Wind7.8 mph E
Humidity37%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2652° / 38°0.03
52 °
Nashua, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low38°
Average precipitation0.03 in
Chance of precipitation20%
Record high67° (1960)
Record low12° (2020)
Tue, 2751° / 36°0.02
51 °
Nashua, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.02 in
Chance of precipitation15%
Record high69° (1983)
Record low8° (2023)
Wed, 2849° / 35°0.02
49 °
Nashua, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.02 in
Chance of precipitation13%
Record high73° (1990)
Record low8° (2023)
Thu, 2949° / 35°0.04
49 °
Nashua, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.04 in
Chance of precipitation15%
Record high70° (1968)
Record low9° (1991)
Fri, 3048° / 34°0.02
48 °
Nashua, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (1983)
Record low5° (1991)
Sat, 3148° / 33°0.02
48 °
Nashua, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.02 in
Chance of precipitation20%
Record high71° (1990)
Record low6° (1984)
Sun, 0147° / 34°0.01
47 °
Nashua, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.01 in
Chance of precipitation12%
Record high66° (2008)
Record low3° (1984)
Mon, 0246° / 33°0.02
46 °
Nashua, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.02 in
Chance of precipitation15%
Record high67° (1965)
Record low1° (1991)
Tue, 0346° / 33°0.02
46 °
Nashua, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.02 in
Chance of precipitation17%
Record high64° (2020)
Record low-1° (1991)
Wed, 0448° / 33°0.03
48 °
Nashua, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.03 in
Chance of precipitation20%
Record high67° (2020)
Record low13° (1973)
Thu, 0546° / 32°0.02
46 °
Nashua, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.02 in
Chance of precipitation15%
Record high64° (2020)
Record low5° (2003)
Fri, 0645° / 31°0.02
45 °
Nashua, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high63° (2010)
Record low6° (1991)
Sat, 0745° / 31°0.02
45 °
Nashua, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.02 in
Chance of precipitation13%
Record high70° (1999)
Record low10° (1973)
Sun, 0843° / 31°0.04
43 °
Nashua, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high66° (1999)
Record low2° (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 Nashua, 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 Nashua, 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.