Indiana Climate and Weather Report

The initial cool wave of September is likely over as we welcome warmer temperatures for the next several weeks. The Climate Prediction Center is showing strong confidence for above-normal temperatures through September 24rd, which should help accumulate growing degree days and move agricultural production further along (Figure 1). Outlooks are showing significant probabilities for above-normal precipitation over the next few weeks, but it is uncertain how much and when that precipitation will occur. The 3-month (September-November) climate outlook is indicating significant probabilities for above-normal temperatures (Figure 2). This will hopefully discourage any cold waves passing through from causing an earlier-than-desired hard freeze event. However, keep in mind that predictions are still too far in the future to provide any certainty and climate outlooks are unable to account for a brief (1-to-3-day) event from passing through with temperatures low enough to cause a frost. Primary message: still too soon to predict when the first fall frost will occur.

Figure 1.

Figure 2.

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