Prairie Weather (Rural Roots Canada) – They don’t call it Monsoon June for nothing! Unsettled weather remains through the weekend
The major rainfall event that soaked much of Alberta and western Saskatchewan through the past several days is finally pulling away. What follows is a split pattern: Alberta and the Peace get a brief but welcome drying window Thursday and Friday before the next system arrives over the weekend, while Saskatchewan and Manitoba shake off the heat wave and transition into more seasonable, active early-summer weather. The overall pattern through the period remains unsettled, with periodic storm chances punctuating stretches of warm, pleasant conditions. That describes a reasonably typical early June on the prairies, which after the extremes of recent weeks is not unwelcome.
Recent heavy rainfall in Alberta has created a starkly divided reality for the province’s agricultural sector. In the northeast, extreme storms have saturated the ground, forcing many canola growers to abandon their crops and return unused seed to suppliers. Conversely, southern Alberta has welcomed the moisture as a reprieve from long-term drought, significantly boosting reservoir levels. To manage the surplus, irrigation officials are allowing producers to discharge water through pumping, provided they adhere to strict safety and testing protocols. While the excessive wetness remains a hurdle for some, the overall increase in water storage provides a secure outlook for the upcoming peak growing season.
Thursday
Peace Region
A 30% chance of showers early in the afternoon gives way to clearing by late afternoon, with west winds gusting to 50 km/h through the morning before easing. Highs reach 20 degrees. The afternoon clearing is genuine, and the gusty west wind will promote surface drying on fields wetted down earlier in the week. If you have remaining seeding acres or fieldwork to catch up on, Thursday afternoon is your opportunity. Get equipment moving once the showers clear.
Alberta
The stubborn upper low that brought days of rain and wind is finally departing, but it leaves Thursday with one more round of showers and a thunderstorm risk across much of the province. A shortwave trough crossing into Alberta from BC this afternoon triggers the activity. These storms should remain non-severe, though an isolated severe storm with strong wind and large hail cannot be ruled out. Alerts are in place for parts of the province.
Patchy fog may remain in places throughout the province, but should dissipate through the day. It may redevelop overnight in areas where the cloud breaks. Lightning is likely overnight for parts of northern Alberta. Central and southern Alberta see highs in the upper teens to near 20, with overnight lows in the single digits. Watch for lightning risk through the afternoon and evening.
Saskatchewan
The occluded low over southwestern Manitoba and the upper low over Saskatchewan are both drifting eastward and weakening. Thursday is the recovery day for the province, with temperatures returning to the low to mid 20s across central and southern areas. Lingering instability from the departing lows will produce scattered showers and thunderstorms through the afternoon and evening, but no severe weather is expected. Southwestern Saskatchewan may see additional showers and thunderstorms supported by a disturbance lifting northeast from Montana. Fields in the northeast and east-central that stayed drier through the storm event should be assessed carefully for workability.
Manitoba
The heat wave that covered the province over the past week is pretty much over, with temperatures returning to near-seasonal levels in the upper teens to around 20 degrees. Scattered showers and thunderstorm chances persist through Thursday afternoon and evening as the surface low drifts east and weakens, but no severe weather is anticipated. The dramatic temperature drop from last week’s 30 to 35 degree highs is notable. Scout your crops for heat stress damage, particularly in canola that was in early flowering stages during the hottest days.
Friday
Peace Region
A chance of showers continues Friday under cloudy skies with highs staying below 20 degrees. The sky clears overnight, so it will be chilly, with a low near 5. The developing low and cold front pushing showers into the Peace keep Friday from being a full field day. Amounts should be modest. The overnight low is the coldest of the period, so crops in vulnerable stages in low-lying areas should be watched Friday night, though a hard frost is not expected.
Alberta
The map below shows rainfall expected in BC and Alberta on Friday:
Friday splits sharply by region. Southern Alberta gets a clean day with sunshine and highs in the low 20s, while central and northern Alberta carries a 60% chance of showers and thunderstorms from a developing low and cold front. Thunderstorms in the central Alberta-to-northwestern Saskatchewan corridor could become severe Friday afternoon. And some of the storms may develop very quickly with little advance notice. Check weather watches and warnings throughout the day. Large hail, damaging wind, and locally heavy rain are the primary threats.
As the map above shows, a fast-moving system is expected to deliver 10-30mm to the area between Edmonton and Lloydminster. Central Alberta producers should be weather-aware through the afternoon and evening Friday. Southern Alberta producers get a good field day. Use it.
Saskatchewan
Friday stands out as the best day of the period for most of the province. The upper low has cleared, sunshine returns across central and southern areas, and highs climb into the mid-to-upper 20s. Soil temperatures remain elevated from last week’s heat wave and germination conditions for any acres seeded this week should be excellent. Push hard on any remaining seeding in the northeast and east-central where fields are fit. Northwestern Saskatchewan is the exception, where the Alberta low and cold front push showers and thunderstorms into the region Friday afternoon and evening, extending the storm corridor from central Alberta.
The overall pattern is shifting toward a fairly typical early summer setup with sunny to partly cloudy skies, near to above average temperatures, and chances for showers and thunderstorms every couple of days, which is generally favourable for crops that are now establishing.
Manitoba
An excellent field day across the province. The departing system clears into Ontario and skies open up, with highs climbing to the low 20s – remaining clear overnight. Central and eastern Manitoba should be in good shape for fieldwork. Producers with remaining seeding acres should be moving Friday. The forecast calls for warmth and sunshine returning through the weekend, with temperatures approaching 30 by Saturday.
Saturday
Peace Region
The weekend system arrives in the Peace Saturday. Cooler temperatures in the mid teens with increasing shower chances through the day and overnight. The drying window that opened Thursday afternoon closes here. Assess field conditions before moving equipment Saturday.
Alberta
The next upper low pushes inland from the Pacific and moves into central Alberta Saturday, generating a surface low and increasing cloud cover across the province. A fast-moving system is expected to deliver rain between Sundre and Edmonton, with scattered showers possible in almost all other areas. Northern and central Alberta will see the most organized precipitation. Southern Alberta carries better odds of staying drier through the day but is not immune, with shower chances increasing through the afternoon. Temperatures stay slightly below seasonal levels in the mid to high teens despite the increasing cloud. Plan field operations for the morning hours and be flexible heading into the afternoon.
Saskatchewan
Warm air surges back into the province Saturday ahead of the approaching low, with highs climbing into the upper 20s across southern and central areas. A new area of low pressure developing over Alberta will draw another surge of warm air northward into Saskatchewan and Manitoba, with temperatures climbing rapidly back into the upper twenties and low thirties in many southern and central regions.
The warm return also brings an increasing risk of afternoon and evening thunderstorms, particularly across western and central Saskatchewan where the Alberta system interacts with the returning heat. Some storms Saturday afternoon could become locally strong, with large hail and damaging wind possible where instability is highest. Check for watches and warnings before extended field operations Saturday afternoon.
Manitoba
The warmest day of the period for Manitoba, with temperatures soaring into the low 30s across southern areas under full sunshine. The province stays largely dry Saturday under the building ridge, making it one of the best fieldwork days of the outlook period. If you have seeding left to complete in central or eastern Manitoba, Saturday is the day to push hard. The warm air mass is well established, and overnight lows staying well above 15 degrees confirm the early summer pattern has returned to the province.
Sunday
Peace Region
Showers continue Sunday as the weekend system works through the Peace, with highs in the mid to upper teens under a cloudy sky. Sunday is not a productive field day for the region. Better conditions return Monday with the expectation of a mix of sun and cloud.
Alberta
The upper low sits over central Alberta Sunday, bringing the heaviest precipitation of the weekend event to the province. The Sundre-to-Edmonton corridor is in line for the bulk of the rainfall, and fields that had just begun to dry from last week’s major event will take on more water. There is no seeding window in central Alberta Sunday. Southern Alberta, further from the system’s core, may hold on to partly cloudy conditions longer, but shower risk is province-wide. Looking ahead to next week, Alberta will likely see alternating periods of sunshine and cloud and recurring chances for showers and thunderstorms every few days, with temperatures near or slightly above seasonal averages.
Saskatchewan
The system that brought storms to western Saskatchewan Saturday moves through the rest of the province Sunday, bringing showers and thunderstorms with variable rainfall amounts. Southern and central areas cool back toward the low-to-mid 20s from Saturday’s heat, and a strong storm between Saskatoon and Regina cannot be ruled out Sunday as lingering instability interacts with the cold front. After an extraordinary fortnight of weather that included a record heat wave, major rainfall, and multiple severe weather events, the province is shifting toward a more normal early summer pattern. The most likely scenario beyond the weekend is for near to above average temperatures and chances for showers and thunderstorms every couple of days, which should be good for farmers.
Manitoba
The province stays warm Sunday but shower chances increase through the day as the frontal system approaches from the west. Western Manitoba will see precipitation sooner while eastern Manitoba holds on to better conditions through the morning, making it the last productive window of the outlook period for that region. An active early summer pattern is expected to prevail across the prairies beyond the weekend, with recurring moisture and near-normal temperatures through mid-June.
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