Fargo, ND weather in September
Fargo is mild in September, with some rain: highs average 72°F and nights drop to about 48°F. Rain falls on about 9 days. A good month for most outdoor plans.
- Normal high
- 72°F
- Normal low
- 48°F
- Wet days
- 9
- 2.7 in total
- Muggy days
- 1
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 78°F | 65°F |
| Normal low | 53°F | 42°F |
| Chance of a wet day | 28% | 28% |
| Sunrise / sunset | 6:46 am / 8:07 pm | 7:24 am / 7:09 pm |
| Daylight | 13.3 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical September day
- 6 am52°Fdew point 47°F
- 9 am59°Fdew point 49°F
- Noon67°Fdew point 49°F
- 3 pm70°Fdew point 49°F
- 6 pm67°Fdew point 49°F
- 9 pm59°Fdew point 49°F
NOAA hourly normals (local standard time) from Fargo Hector Intl Airport (4 mi away); average wind 10 mph; clear or few clouds in 62% of daytime hours, mostly cloudy or overcast in 32%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F15 of 30
- Hot dayshigh 90°F or more1 of 30
- Muggy daysdaily mean dew point 65°F or more1 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in5 of 30
- Freezing nightslow 32°F or below1 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 2.7 in; a dry September brings about 1.5 in and a wet one about 3.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202015: average high 78°F
- Coolest September1999: average high 65°F
- Wettest September1999: 6.5 in
- Driest September2012: 0.1 in
- Highest reading97°F (September 10, 1998)
- Lowest reading22°F (September 30, 2003)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 81°F | 72°F | 56°F |
| Normal low | 57°F | 48°F | 35°F |
| Wet days | 9 | 9 | 9 |
| Comfortable days | 12 | 15 | 6 |
| Daylight | 14.2 h | 12.6 h | 10.9 h |
Highs change by -9°F from August and -16°F into October.
Nearby alternatives in September
- Cooler: Duluth, MN221 mi · high 67°F · 10 wet days
How Fargo ranks in September
- Normal high329th warmest of 378 cities; 3rd of 4 in North Dakota
- Wet days229th driest of 378
- Comfortable days74th most of 342
What to pack for Fargo in September
- A rain jacket or umbrella – rain on about 9 days
Frost in September
The first fall frost typically comes around Sep 30; in 1 year in 10 it comes before Sep 18. All frost dates for Fargo.
Heating and cooling
September has 198 heating degree days and 49 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Fargo in September?
The normal high is 72°F and the normal low is 48°F. From 1991 to 2020 the hottest September reading was 97°F (September 10, 1998).
Does it rain a lot in Fargo in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 2.7 in. The wettest September in 1991-2020 was in 1999 (6.5 in); the driest was in 2012 (0.1 in).
Is September a good time to visit Fargo?
September ranks 3rd of 12 months on our comfort score for Fargo (69 out of 100). It has about 15 comfortable days and about 1 day at 90°F or hotter. The best months are May and June.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Fargo Hector Intl Airport (USW00014914), 3.5 mi NNW of the city center, 900 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Hector International Airport (727530-14914), 3.4 mi NNW of the city center, 895 ft . Hourly observations, 1991-2020.