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Tioga, North Dakota 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Tioga ND
National Weather Service Forecast for: Tioga ND
Issued by: National Weather Service Bismarck, ND
Updated: 8:09 pm CDT Jul 26, 2025
 
Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Some of the storms could be severe.  Mostly cloudy, with a low around 60. East wind 8 to 13 mph, with gusts as high as 18 mph.  New rainfall amounts between a quarter and half of an inch possible.
Severe
T-Storms
Sunday

Sunday: A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 82. Southeast wind 6 to 9 mph becoming west in the afternoon.  Chance of precipitation is 30%.
Chance
T-storms
Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 57. Northwest wind 7 to 10 mph becoming north after midnight.
Chance
T-storms
Monday

Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly cloudy, with a high near 72. North wind 6 to 10 mph, with gusts as high as 18 mph.
Chance
T-storms
Monday
Night
Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 54. Northeast wind 5 to 8 mph.  Chance of precipitation is 30%.
Chance
Showers
Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 74. Northeast wind 5 to 8 mph.
Partly Sunny
then Chance
Showers
Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 54. East wind 5 to 9 mph.
Slight Chance
T-storms
Wednesday

Wednesday: Mostly sunny, with a high near 75. East wind 5 to 10 mph.
Mostly Sunny

Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 55. East wind 7 to 10 mph.
Partly Cloudy

Lo 60 °F Hi 82 °F Lo 57 °F Hi 72 °F Lo 54 °F Hi 74 °F Lo 54 °F Hi 75 °F Lo 55 °F

Hazardous Weather Outlook
 

Tonight
 
A 30 percent chance of showers and thunderstorms, mainly after 5am. Some of the storms could be severe. Mostly cloudy, with a low around 60. East wind 8 to 13 mph, with gusts as high as 18 mph. New rainfall amounts between a quarter and half of an inch possible.
Sunday
 
A chance of showers and thunderstorms before 10am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Southeast wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 30%.
Sunday Night
 
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 57. Northwest wind 7 to 10 mph becoming north after midnight.
Monday
 
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 72. North wind 6 to 10 mph, with gusts as high as 18 mph.
Monday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Northeast wind 5 to 8 mph. Chance of precipitation is 30%.
Tuesday
 
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 74. Northeast wind 5 to 8 mph.
Tuesday Night
 
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 54. East wind 5 to 9 mph.
Wednesday
 
Mostly sunny, with a high near 75. East wind 5 to 10 mph.
Wednesday Night
 
Partly cloudy, with a low around 55. East wind 7 to 10 mph.
Thursday
 
Partly sunny, with a high near 76. Southeast wind 8 to 16 mph, with gusts as high as 24 mph.
Thursday Night
 
Mostly cloudy, with a low around 57. Southeast wind 11 to 14 mph, with gusts as high as 22 mph.
Friday
 
Partly sunny, with a high near 76. Southeast wind 13 to 18 mph, with gusts as high as 28 mph.
Friday Night
 
A chance of showers. Mostly cloudy, with a low around 58. Southeast wind 11 to 16 mph, with gusts as high as 24 mph.
Saturday
 
Partly sunny, with a high near 79.

 

Forecast from NOAA-NWS for Tioga ND.

Weather Forecast Discussion
543
FXUS63 KBIS 262339
AFDBIS

Area Forecast Discussion
National Weather Service Bismarck ND
639 PM CDT Sat Jul 26 2025

.KEY MESSAGES...

- Hot and humid early this evening, with heat indices around
  100 in south central North Dakota and the James River Valley.

- Isolated to scattered severe thunderstorms are once again
  possible across western and central North Dakota tonight.
  Expected hazards include hail up to the size of golf balls and
  wind gusts up to 70 mph.

- Periodic showers and thunderstorms are expected to continue
  Sunday through the first half of next week. Isolated severe
  thunderstorms are possible over this time period.

- Temperatures expected to fall below average by the middle of
  next week.

&&

.UPDATE...
Issued at 639 PM CDT Sat Jul 26 2025

No significant changes were made to the forecast with this
update cycle. The Heat Advisory remains in effect until 01 UTC as
low-level moisture advection has resulted in surface dewpoints
well into the 70s F in much of south central ND, contributing to
heat index values around 100 F as of this writing.

Our attention remains on potential severe thunderstorms tonight.
As of 23 UTC, RAP objective mesoscale analysis fields support a
wide axis of extreme bouyancy marked by MUCAPE on the order of
4000 to 6000 J/kg, highest in south central and southeastern ND.
Objective analysis output suggests MLCIN has become relatively
minimized, and the 00 UTC KBIS RAOB suggests only small residual
capping aloft. However, up until this point forcing for ascent
has been minimal, though an area of surface convergence noted in
wind fields centered over McKenzie, Dunn, and southern Mountrail
counties did yield one attempt at convective initiation about an
hour ago. We will continue monitoring that zone of convergence
as it does intersect with an area of steep low-level lapse
rates, but satellite trends suggest odds of near-term initiation
in that zone are only low. Otherwise, a more notable upstream
impulse and related ascent aloft is approaching southeastern MT
and western SD, and is expected to yield greater thunderstorm
development which is then expected to move into ND during the
late evening, progressing northeastward overnight. Additional
thunderstorms have developed in central SD near the surface low
and in an area where a hot, deeply-mixed PBL overlaps with the
rich moisture north of the surface low across north central SD.
Those storms -- or an aggregate of those storms and additional
development as the upstream, previously-mentioned impulse all
approach the area -- will yield an increasing severe-storm risk
after about 8 pm CDT/7 pm MDT, beginning along the ND/SD border
region. Extreme bouyancy combined with effective-layer shear on
the order of 40 kt will support large hail and damaging winds.
If clustering of convection occurs, a more pronounced damaging
wind threat may evolve given supportive thermodynamic profiles
and 0-3-km bulk shear magnitudes.

&&

.DISCUSSION...
Issued at 257 PM CDT Sat Jul 26 2025

Currently, it was mostly sunny across much of western and
central ND. Scattered thunderstorms continued along the
International Border and also in the southern James River
Valley. This activity may linger along the borders, but is not
expected to be severe. Otherwise dry through the rest of the
afternoon. Heat indices were currently in the 90s across the
south central and into the James River Valley. Still a ways to
go for reaching highs. Will continue the Heat Advisory.

The main forecast issue for tonight will be thunderstorms.
Currently, there looks to be a weak impulse tracking through
central ND. The far north may be under the influence of the
right entrance region of an upper jet over southern Canada.
Otherwise it looks like building upper heights and little in the
way of any forcing mechanism today. It will be, however, quite
unstable this afternoon. MLCapes are already in the 1500-3000
J/kg across the forecast area. Forecast soundings do show a bit
of dry air in the lower levels and current CINS are rather
stout. Effective shear has been increasing through the day and
currently ranges from 30-35kt south to 45 kts northwest.
Needless to say, if we could see some convection today it would
likely become severe quickly but it`s highly conditional upon if
we can overcome the negative effects of the lower level capping
and upper level ridging.

Later on, most likely not until tonight, we do see a stronger
impulse lifting from northern Colorado into eastern Wyoming.
This will likely provide the forcing for ascent needed to
initiate convection tonight. There may also be another wave
over eastern Idaho which could aid in convection over northern
Wy and southeast MT. Convection is already firing off the
Bighorns and southward through eastern Wyoming. Cams have been
pretty consistent in lifting convection southwest to northeast
across the forecast area this evening and into the early
overnight hours. The main threat appears to be winds. With DCAPE
well in excess of 1000 J/Kg across the southern two thirds of
the forecast area and a strong wave lifting into the local area,
our currently posted winds hazards of 70 mph look reasonable
for now. If there were to be an early evening thunderstorm it`s
possible we could see a period of large hail to golf ball size,
but once we get into the mid-evening hours, winds look to be the
main threat.

On Sunday SPC has pared back the marginal threat over the
eastern portion of the CWA, keeping only the far north central
in the marginal risk for severe storms. Not quite sure about
this. Cold front looks to drop south through the area but we
remain pretty warm and there looks to be some pretty good speed
shear north of the boundary. There is some rather strong mid
level height rises, which would be a limiting factor for
convection. We`ll see how things play out and overall probably
okay leaving just general thunder for much of the forecast area.
The severe threat on Monday remains marginal across the far
south and we actually see some height falls traverse the
forecast area. However there may also be some capping issues
Monday as well.

We finally begin to cool off with diminishing thunderstorm
chances as we head into mid week.

&&

.AVIATION /00Z TAFS THROUGH 00Z MONDAY/...
Issued at 639 PM CDT Sat Jul 26 2025

Scattered to numerous showers and thunderstorms are expected to
move generally northeast across the area overnight, with the
highest probability of impacts in south central ND and the James
River valley. The 03 to 10 UTC timeframe will be most-favored
for thunderstorms with erratic and strong wind gusts, potential
hail, and localized IFR/LIFR visibility restrictions. This
activity is expected to generally end by early Sunday morning.
Outside of thunderstorms, VFR conditions and light winds will
prevail across western and central ND tonight and Sunday.

&&

.BIS WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM CDT /7 PM MDT/ this evening for
NDZ023-025-034>037-042-045>048-050-051.

&&

$$

UPDATE...CJS
DISCUSSION...TWH
AVIATION...CJS
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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