As of 00:54 MDT

Weather in Simpson, MT

53°

Simpson, Wednesday, 7 October, 00:54

Overcast. Feels like 50°. High 67°, low 43°.

Pressure30.03 inHg

Wind6.3 mph N

Humidity49%

Visibility6.2 mi

Dew point34°

See detailed hourly forecast

Monthly outlook for Simpson, MT: average high 59°, average low 40.4°. That is 1.1° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 9 October (76.1°), the coolest 12 October (30.2°).

59°/40.4°

Average high / low

+1.1°

Above normal

0 / 2

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	57.7°	57.7°	+0°
17 October – 26 October	61.1°	54.6°	+3.6°
27 October – 5 November	at normal	47.7°	—

October records over 66 years

86.4°7 October 1980All-time high

-16.2°29 October 1991All-time low

Thu, 0873° / 47°

73 °

Simpson, Thursday, 8 October

Partly cloudy. High 73°, low 47°.

Pressure29.94 inHg

Wind4.4 mph W

Humidity39%

Visibility6.2 mi

Dew point41°

Fri, 0976° / 48°

76 °

Simpson, Friday, 9 October

Partly cloudy. High 76°, low 48°.

Pressure29.53 inHg

Wind8.3 mph SW

Humidity30%

Visibility6.2 mi

Dew point38°

Sat, 1065° / 39°

0.02

65 °

Simpson, Saturday, 10 October

Light rain. High 65°, low 39°.

Pressure29.77 inHg

Wind18.5 mph NW

Humidity66%

Visibility6.2 mi

Dew point36°

Sun, 1139° / 35°

39 °

Simpson, Sunday, 11 October

Overcast. High 39°, low 35°.

Pressure30.30 inHg

Wind13.7 mph N

Humidity75%

Visibility—

Dew point30°

Mon, 1247° / 30°

47 °

Simpson, Monday, 12 October

Mostly clear. High 47°, low 30°.

Pressure30.27 inHg

Wind9.2 mph S

Humidity64%

Visibility—

Dew point27°

Tue, 1362° / 37°

62 °

Simpson, Tuesday, 13 October

Clear. High 62°, low 37°.

Pressure29.74 inHg

Wind13.6 mph S

Humidity57%

Visibility—

Dew point36°

Wed, 1451° / 41°

0.02

51 °

Simpson, Wednesday, 14 October

Light rain. High 51°, low 41°.

Pressure29.91 inHg

Wind27.5 mph NW

Humidity83%

Visibility—

Dew point38°

Thu, 1548° / 36°

48 °

Simpson, Thursday, 15 October

Clear. High 48°, low 36°.

Pressure30.36 inHg

Wind30 mph NW

Humidity38%

Visibility—

Dew point20°

Fri, 1649° / 33°

49 °

Simpson, Friday, 16 October

Clear. High 49°, low 33°.

Pressure30.47 inHg

Wind17.4 mph NW

Humidity34%

Visibility—

Dew point16°

Sat, 1762° / 36°

62 °

Simpson, Saturday, 17 October

Partly cloudy. High 62°, low 36°.

Pressure30.03 inHg

Wind23.6 mph NW

Humidity27%

Visibility—

Dew point20°

Sun, 1859° / 45°

59 °

Simpson, Sunday, 18 October

Overcast. High 59°, low 45°.

Pressure30.03 inHg

Wind9.5 mph E

Humidity31%

Visibility—

Dew point24°

Mon, 1959° / 45°

59 °

Simpson, Monday, 19 October

Overcast. High 59°, low 45°.

Pressure29.94 inHg

Wind16.1 mph NW

Humidity39%

Visibility—

Dew point29°

Tue, 2069° / 43°

69 °

Simpson, Tuesday, 20 October

Overcast. High 69°, low 43°.

Pressure29.94 inHg

Wind18.9 mph SW

Humidity35%

Visibility—

Dew point28°

Wed, 2163° / 45°

63 °

Simpson, Wednesday, 21 October

Clear. High 63°, low 45°.

Pressure30.33 inHg

Wind23.4 mph NW

Humidity40%

Visibility—

Dew point31°

Thu, 2255° / 43°

55 °

Simpson, Thursday, 22 October

Overcast. High 55°, low 43°.

Pressure30.18 inHg

Wind7.9 mph SE

Humidity33%

Visibility—

Dew point25°

From day 17 onward the outlook is built from 60-year climate statistics

Fri, 2354° / 34°

0.03

54 °

Simpson, Friday, 23 October

Climate normal for this date — 60-year average.

Average high54°

Average low34°

Average precipitation0.03 in

Chance of precipitation12%

Record high74° (1965)

Record low-6° (2020)

Sat, 2453° / 33°

0.02

53 °

Simpson, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high53°

Average low33°

Average precipitation0.02 in

Chance of precipitation12%

Record high76° (2007)

Record low6° (2020)

Sun, 2553° / 34°

0.01

53 °

Simpson, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high53°

Average low34°

Average precipitation0.01 in

Chance of precipitation7%

Record high75° (1990)

Record low0° (2020)

Mon, 2651° / 34°

0.03

51 °

Simpson, Monday, 26 October

Climate normal for this date — 60-year average.

Average high51°

Average low34°

Average precipitation0.03 in

Chance of precipitation22%

Record high72° (1983)

Record low4° (2020)

Tue, 2751° / 32°

0.03

51 °

Simpson, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high51°

Average low32°

Average precipitation0.03 in

Chance of precipitation18%

Record high67° (1974)

Record low2° (1969)

Wed, 2849° / 31°

0.01

49 °

Simpson, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high49°

Average low31°

Average precipitation0.01 in

Chance of precipitation10%

Record high72° (2017)

Record low-7° (1991)

Thu, 2948° / 30°

0.02

48 °

Simpson, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high48°

Average low30°

Average precipitation0.02 in

Chance of precipitation15%

Record high72° (2008)

Record low-16° (1991)

Fri, 3048° / 29°

0.02

48 °

Simpson, Friday, 30 October

Climate normal for this date — 60-year average.

Average high48°

Average low29°

Average precipitation0.02 in

Chance of precipitation10%

Record high68° (1983)

Record low-14° (1991)

Sat, 3147° / 29°

0.04

47 °

Simpson, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.04 in

Chance of precipitation22%

Record high66° (1983)

Record low-9° (1984)

Sun, 0147° / 29°

0.01

47 °

Simpson, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.01 in

Chance of precipitation8%

Record high68° (1965)

Record low-19° (1984)

Mon, 0247° / 29°

0.02

47 °

Simpson, Monday, 2 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.02 in

Chance of precipitation12%

Record high65° (1978)

Record low-14° (1991)

Tue, 0347° / 29°

0.02

47 °

Simpson, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.02 in

Chance of precipitation13%

Record high66° (1983)

Record low-12° (1991)

Wed, 0447° / 31°

0.02

47 °

Simpson, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.02 in

Chance of precipitation10%

Record high69° (1975)

Record low4° (2003)

Thu, 0546° / 29°

0.04

46 °

Simpson, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.04 in

Chance of precipitation25%

Record high67° (1975)

Record low-9° (2003)

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 Simpson, 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 Simpson, 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.